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Full vulnerability report · 2026
CVE-2026-27889High confidence

NATS: Pre-auth remote server crash via WebSocket frame length overflow in wsRead

nats-io · nats-server

Official source article: GitHub GHSA-PQ2Q-RCW4-3HR6 ↗. Check the applicable product and release in the original source.

7.5HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 9 Sep 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.84% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs nats-io nats-server and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 2 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcenats-serverAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcenats-serverAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcenats-serverVendor fix publishedDebian records a fixed source-package version for this release.2.12.6-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcenats-serverVendor fix publishedDebian records a fixed source-package version for this release.2.12.6-1Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivenats-serverUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Open-source package ranges6 source-attributed ranges

These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.

Ecosystem and packageAffected rangeFirst fixed versionEvidence
Gogithub.com/nats-io/nats-serverSEMVER: introduced 0Not statedOSV record ↗aggregator derived · 10 Sep 2026
Gogithub.com/nats-io/nats-server/v2SEMVER: introduced 2.2.0; fixed 2.11.142.11.14OSV record ↗aggregator derived · 10 Sep 2026
Gogithub.com/nats-io/nats-server/v2SEMVER: introduced 2.12.0; fixed 2.12.52.12.5OSV record ↗aggregator derived · 10 Sep 2026
gogithub.com/nats-io/nats-server> 0Not statedGitHub advisory ↗upstream repository advisory · 27 Mar 2026
gogithub.com/nats-io/nats-server/v2>= 2.2.0, < 2.11.142.11.14GitHub advisory ↗upstream repository advisory · 27 Mar 2026
gogithub.com/nats-io/nats-server/v2>= 2.12.0, < 2.12.52.12.5GitHub advisory ↗upstream repository advisory · 27 Mar 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-27889 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitygithub.com/nats-io/nats-server: NATS-Server: Denial of Service via malformed WebSockets frame
12 fixed

The vendor explicitly identifies these products or versions as containing the fix.

  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Multicluster Global Hub 1.4.9
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Multicluster Global Hub 1.4.9
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Multicluster Global Hub 1.4.9
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Multicluster Global Hub 1.4.9
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Multicluster Global Hub 1.6.5
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Multicluster Global Hub 1.6.5
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Multicluster Global Hub 1.6.5
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Multicluster Global Hub 1.6.5
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Red Hat multicluster global hub 1.5.3
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Red Hat multicluster global hub 1.5.3
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Red Hat multicluster global hub 1.5.3
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Red Hat multicluster global hub 1.5.3
Summary
A flaw was found in NATS-Server, a high-performance messaging system. A remote attacker can exploit this vulnerability before authentication by sending a specially crafted WebSockets frame. This missing sanity check can trigger a server panic, leading to a Denial of Service (DoS) for affected deployments that use WebSockets and expose the network port to untrusted endpoints.
Remediation
For more details, see the Red Hat Advanced Cluster Management for Kubernetes documentation: https://docs.redhat.com/documentation/en-us/red_hat_advanced_cluster_management_for_kubernetes/2.13/html/multicluster_global_hub/index
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-15962

No EUVD known-exploited evidence

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before authentication, and so is exposed to anyone who can connect to the websockets port. Versions 2.11.14 and 2.12.5 contains a fix. A workaround is available. The vulnerability only affects deployments which use WebSockets and which expose the network port to untrusted end-points. If one is able to do so, a defense in depth of restricting either of these will mitigate the attack.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
7.5 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before authentication, and so is exposed to anyone who can connect to the websockets port. Versions 2.11.14 and 2.12.5 contains a fix. A workaround is available. The vulnerability only affects deployments which use WebSockets and which expose the network port to untrusted end-points. If one is able to do so, a defense in depth of restricting either of these will mitigate the attack.

What

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before authentication, and so is exposed to anyone who can connect to the websockets port. Versions 2.11.14 and 2.12.5 contains a fix. A workaround is available. The vulnerability only affects deployments which use WebSockets and which expose the network port to untrusted end-points. If one is able to do so, a defense in depth of restricting either of these will mitigate the attack.

Why

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before authentication, and so is exposed to anyone who can connect to the websockets port. Versions 2.11.14 and 2.12.5 contains a fix. A workaround is available. The vulnerability only affects deployments which use WebSockets and which expose the network port to untrusted end-points. If one is able to do so, a defense in depth of restricting either of these will mitigate the attack.

Why

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

CISA Vulnrichment records proof-of-concept exploitation in its SSVC data. BlackTree has not independently executed or validated exploit material.

Likely attack path
a network path → Integer Overflow or Wraparound → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-190 ↗

CWE-190: Integer Overflow or Wraparound. The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-190Public exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-15962Official EUVD mapping

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before authentication, and so is exposed to anyone who can connect to the websockets port. Versions 2.11.14 and 2.12.5 contains a fix. A workaround is available. The vulnerability only affects deployments which use WebSockets and which expose the network port to untrusted end-points. If one is able to do so, a defense in depth of restricting either of these will mitigate the attack.

Official EUVD record ↗
BSI · German · WID-SEC-2026-0641NATS Server: Mehrere Schwachstellen ermöglichen Denial of Service

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in NATS Server ausnutzen, um einen Denial of Service Angriff durchzuführen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260401Security Bulletin 01 Apr 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 01 Apr 2026, published on 1 April 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-009200Linux Foundationのnats-serverにおける整数オーバーフローの脆弱性

NATS-Serverは、クラウドおよびエッジネイティブのメッセージングシステムであるNATS.io向けの高性能サーバーです。バージョン2.2.0から2.11.14および2.12.5の間のバージョンでは、WebSocketsフレームに対するサニティチェックが欠如していたため、nats-serverでサーバーパニックが発生する可能性がありました。これは認証前に発生するため、WebSocketsポートに接続できる誰でも影響を受けます。バージョン2.11.14および2.12.5で修正が行われています。回避策も存在します。この脆弱性はWebSocketsを使用し、かつネットワークポートを信頼されていないエンドポイントに公開している環境にのみ影響します。これらのいずれかを制限する多層防御により、攻撃を軽減できます。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
nats-server: 2.2.0, < 2.11.14, 2.12.0, < 2.12.5
Fixed
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
04

Evidence and provenance

Published 25 Mar 2026 · Last source change 9 Sept 2026, 12:05 UTC · CWE-190 · Integer Overflow or Wraparound

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-15962
Product sourceCNA
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Red Hat multicluster global hub 1.5.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Red Hat multicluster global hub 1.5.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Red Hat multicluster global hub 1.5.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Red Hat multicluster global hub 1.5.3
    After
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Red Hat multicluster global hub 1.5.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Red Hat multicluster global hub 1.5.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Red Hat multicluster global hub 1.5.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Red Hat multicluster global hub 1.5.3
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    nats-server: >= 2.2.0, < 2.11.14, >= 2.12.0, < 2.12.5 · Fixed: RHSA-2026:21769: Multicluster Global Hub 1.5.6
    After
    nats-server: >= 2.2.0, < 2.11.14, >= 2.12.0, < 2.12.5 · Fixed: RHSA-2026:22347: Multicluster Global Hub 1.4.5
    CNA ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Red Hat multicluster global hub 1.5.1
    After
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Red Hat multicluster global hub 1.5.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Red Hat multicluster global hub 1.5.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Red Hat multicluster global hub 1.5.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Red Hat multicluster global hub 1.5.3
    Red Hat Product Security ↗
  4. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-27889 to remediation: access.redhat.com/CVE-2026-27889.
    Before
    remediation: access.redhat.com/CVE-2026-27889
    After
    remediation: access.redhat.com/CVE-2026-27889
    Red Hat Product Security ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Red Hat multicluster global hub 1.6.0
    After
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Red Hat multicluster global hub 1.5.1
    Red Hat Product Security ↗
  6. Affected versionsThe structured affected or fixed version information changed.
    Before
    >= 2.2.0, < 2.11.14; >= 2.12.0, < 2.12.5 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    nats-server: >= 2.2.0, < 2.11.14, >= 2.12.0, < 2.12.5 · Fixed: RHSA-2026:21769: Multicluster Global Hub 1.5.6
    CNA ↗
  7. Remediation statusRemediation status changed from Mitigation available to Patch available.
    Before
    Mitigation available
    After
    Patch available
    security-advisories@github.com ↗
  8. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Red Hat multicluster global hub 1.4.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Red Hat multicluster global hub 1.4.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Red Hat multicluster global hub 1.4.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Red Hat multicluster global hub 1.4.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Red Hat multicluster global hub 1.6.0
    After
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Red Hat multicluster global hub 1.6.0
    Red Hat Product Security ↗
  9. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-27889 to remediation: access.redhat.com/CVE-2026-27889.
    Before
    remediation: access.redhat.com/CVE-2026-27889
    After
    remediation: access.redhat.com/CVE-2026-27889
    Red Hat Product Security ↗
  10. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Multicluster Global Hub 1.6.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Multicluster Global Hub 1.6.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Multicluster Global Hub 1.6.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Multicluster Global Hub 1.6.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Red Hat multicluster global hub 1.5.1
    After
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Multicluster Global Hub 1.5.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Red Hat multicluster global hub 1.4.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Red Hat multicluster global hub 1.4.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Red Hat multicluster global hub 1.4.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Red Hat multicluster global hub 1.4.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Red Hat multicluster global hub 1.6.0
    Red Hat Product Security ↗
  11. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-27889 to remediation: access.redhat.com/CVE-2026-27889.
    Before
    remediation: access.redhat.com/CVE-2026-27889
    After
    remediation: access.redhat.com/CVE-2026-27889
    Red Hat Product Security ↗
  12. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Multicluster Global Hub 1.5.4; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Multicluster Global Hub 1.5.4; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Multicluster Global Hub 1.5.4; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Multicluster Global Hub 1.5.4; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Red Hat multicluster global hub 1.4.2
    After
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Multicluster Global Hub 1.6.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Multicluster Global Hub 1.6.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Multicluster Global Hub 1.6.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Multicluster Global Hub 1.6.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Red Hat multicluster global hub 1.5.1
    Red Hat Product Security ↗
  13. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-27889 to remediation: access.redhat.com/CVE-2026-27889.
    Before
    remediation: access.redhat.com/CVE-2026-27889
    After
    remediation: access.redhat.com/CVE-2026-27889
    Red Hat Product Security ↗
  14. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Multicluster Global Hub 1.4.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Red Hat multicluster global hub 1.5.1; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Red Hat multicluster global hub 1.6.0; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Red Hat multicluster global hub 1.6.0
    After
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:8c03495da4214e70589e238a60815c265223952470da6d80034e2f83de5c3c8e_ppc64le as a component of Multicluster Global Hub 1.5.4; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:d91359dca7bc04e59f4f1c0d2e5c8a2ecfd92d3499636be065ec89e8ad2eac4f_amd64 as a component of Multicluster Global Hub 1.5.4; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e26dfe26504fa24a04d4e0372461414f6f73c601b7f2f4e7f5e2e520d3281ce8_arm64 as a component of Multicluster Global Hub 1.5.4; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:fc03a86fe38f6d3654c013dd47b330fbd0169f239fb21fd3c456ab78b6df3166_s390x as a component of Multicluster Global Hub 1.5.4; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:05f069047e37620fa1ea72f0c0cbea205f27a4a4594c674b59d6dfa2a18f9f26_ppc64le as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:11e5a558fb1a9ecae142c55512fd4ab028b9162be4ae491f491ee030c6206194_arm64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:76d186f4c2ffdf0d62399ff9f3c78bee536e9193647d571fcb2123743f163c50_s390x as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:9a70b0f09751c7b595b2372275a7be806768632722b921ad828f2d30db9fedde_amd64 as a component of Multicluster Global Hub 1.6.5; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:0465ebb0af8b850f3266a5e3400b269d420a6280cb6b883a606f9b588c102acc_amd64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:7e2f0f5047b68c0c095994c26952a22e282c5a903cdd777310ef2bc7341cd22e_arm64 as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:cdd8450206b5ffc96f1ca6e0b3ab7b582abf47aad8ece474eb14a035fb355d35_s390x as a component of Red Hat multicluster global hub 1.4.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9@sha256:e893adfe11d4ace5f9ae4dc1d1b31a8a3c5d1a0c42f033f4d34c452ec294c608_ppc64le as a component of Red Hat multicluster global hub 1.4.2
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-15962↗Vendor CSAF · Red Hat Product Security↗CISA Vulnrichment SSVC evidence↗CVE authority or vendor reference · GitHub GHSA-PQ2Q-RCW4-3HR6↗Mitigation reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-27889 · cve.blacktree.nl