BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2026
CVE-2026-71576High confidence

Multicluster-global-hub: multicluster-global-hub: manager trusts self-asserted evt.source() for leaf-hub identity in all status handlers

Red Hat · Multicluster Global Hub 1.4.9

Official source article: Red Hat RHSA-2026:67516 ↗. Check the applicable product and release in the original source.

8.5HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • EPSS is 0.29% 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.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Red Hat Multicluster Global Hub 1.4.9 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 30 daysRemediation target: Within 180 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.

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-2026-71576 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitymulticluster-global-hub: multicluster-global-hub: Manager trusts self-asserted evt.Source() for leaf-hub identity in all status handlers
20 fixed

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

  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:19ac9a531acb74dc7744768b332a66fed272f12e85e4f8fd5e79a6bf13c4f492_amd64 as a component of Multicluster Global Hub 1.4.9
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:90239f65825c5d90b6ebcc1cd78baf45614c04c939f127a0bf4d462021fcf379_arm64 as a component of Multicluster Global Hub 1.4.9
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:976e21c6ce39e8902740452881a460ce08e939716053998a95a80c9ccfa7ebb6_ppc64le as a component of Multicluster Global Hub 1.4.9
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:99cddcc48a66352ea886f8f7cb1f9edd52cbab5c0b728e91b92e3b1d4a48455b_s390x as a component of Multicluster Global Hub 1.4.9
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:1835c0a3aa84ca5c21ad010dc6f34f24c6a00321b6b7fa77c768352a5b50340a_arm64 as a component of Multicluster Global Hub 1.5.8
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:3ba4aef856fff40306d12ef5b7b52eef43d60cc24c8463afb03dea3c30118e65_ppc64le as a component of Multicluster Global Hub 1.5.8
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:853d7401081ff240e619ca0c0973e208af53f11d8f3d00eac0b142096c7f5571_s390x as a component of Multicluster Global Hub 1.5.8
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:cf0ef75db27ac45c3b4ce70a32a64f16f6730c35239f6de05cb71804d3013be3_amd64 as a component of Multicluster Global Hub 1.5.8
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:443037c84f8a951ecbad39cbdac276619fa4f7ebce01a47ddafe3c822aaf4a96_arm64 as a component of Multicluster Global Hub 1.6.6
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:8235df6e5b40770f3f3b9bc38b789286e670d223b3675f67adff1af037e4edd9_amd64 as a component of Multicluster Global Hub 1.6.6
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:b600b7bc5ed89be2b357e268990b06c21859b7d224c70b3e195414d419357a91_s390x as a component of Multicluster Global Hub 1.6.6
  • registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:e3579b13e84d230bc559e3a7379718875bb5e546576c1078c703e258354fa5f1_ppc64le as a component of Multicluster Global Hub 1.6.6
Summary
A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.
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-2026-55674

No EUVD known-exploited evidence

A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.

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
8.5 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.

What

A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.

Why

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.

Why

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

How

An attacker operating through a network path may attempt exploitation with low privileges. 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.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Insufficient Verification of Data Authenticity → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-345 ↗

CWE-345: Insufficient Verification of Data Authenticity. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

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:L/UI:N/S:C/C:N/I:H/A:L

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.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SChangedScope: The attack can affect a component governed by a different security authority.CNoneConfidentiality impact: No direct loss is represented by this metric.IHighIntegrity impact: A successful attack can cause a major loss.ALowAvailability impact: A successful attack can cause a limited 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.
NetworkCWE-345
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-55674Official EUVD mapping

A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.

Official EUVD record ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260812Security Bulletin 12 Aug 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 12 Aug 2026, published on 12 August 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

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.
Patch available
Affected
Fixed
Action
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
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 10 Aug 2026 · Last source change 29 Sept 2026, 16:43 UTC · CWE-345 · Insufficient Verification of Data Authenticity

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-2026-55674
Product sourceCNA
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD awaiting enrichment

Missing structured fields: affected versions. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:67516; removed remediation: access.redhat.com/RHSA-2026:73038; removed vendor advisory: access.redhat.com/RHSA-2026:73038; 1 further removals.
    Before
    remediation: access.redhat.com/RHSA-2026:73038 · vendor advisory: access.redhat.com/RHSA-2026:73038 · vendor advisory: access.redhat.com/RHSA-2026:73419
    After
    remediation: access.redhat.com/RHSA-2026:67516
    CNA ↗
  2. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:73038; added vendor advisory: access.redhat.com/RHSA-2026:73038; removed remediation: access.redhat.com/RHSA-2026:67516; 1 further additions.
    Before
    remediation: access.redhat.com/RHSA-2026:67516
    After
    remediation: access.redhat.com/RHSA-2026:73038 · vendor advisory: access.redhat.com/RHSA-2026:73038 · vendor advisory: access.redhat.com/RHSA-2026:73419
    access.redhat.com ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: Multicluster Global Hub 1.4.9: 1788355599 < *; Multicluster Global Hub 1.5.8: 1789515288 < *; Multicluster Global Hub 1.7.3: 1788377424 < *; Multicluster Global Hub 1.8.2: 1788359454 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: Multicluster Global Hub 1.4.9: 1788355599 < *; Multicluster Global Hub 1.5.8: 1789515288 < *; Multicluster Global Hub 1.6.6: 1790086176 < *; Multicluster Global Hub 1.7.3: 1788377424 < *; Multicluster Global Hub 1.8.2: 1788359454 < *
    CNA ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:19ac9a531acb74dc7744768b332a66fed272f12e85e4f8fd5e79a6bf13c4f492_amd64 as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:90239f65825c5d90b6ebcc1cd78baf45614c04c939f127a0bf4d462021fcf379_arm64 as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:976e21c6ce39e8902740452881a460ce08e939716053998a95a80c9ccfa7ebb6_ppc64le as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:99cddcc48a66352ea886f8f7cb1f9edd52cbab5c0b728e91b92e3b1d4a48455b_s390x as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:1835c0a3aa84ca5c21ad010dc6f34f24c6a00321b6b7fa77c768352a5b50340a_arm64 as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:3ba4aef856fff40306d12ef5b7b52eef43d60cc24c8463afb03dea3c30118e65_ppc64le as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:853d7401081ff240e619ca0c0973e208af53f11d8f3d00eac0b142096c7f5571_s390x as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:cf0ef75db27ac45c3b4ce70a32a64f16f6730c35239f6de05cb71804d3013be3_amd64 as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:4ef6d30eae3bb4894056f2c64cf7999cc0ea6da3b95cb943d3f2af8e784a0b61_s390x as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:52378f145b71730fd00936117e7ca5b9759216748a0d453a70cd47606efb384c_arm64 as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:6b9ede59fdcb7f1756369929b3c83c362f30a8a7730d242ccd99d1ac08893881_amd64 as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:af05905391a314b425086e819c7c5336b43a0695ae4cc4fd990a8c657a4a3dea_ppc64le as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:6c0b3f002aac0debb7d52811d21d9f8fc9d0cf2e9d2aaf92a8f47bf8093481c7_amd64 as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:991fc487eaa4357cd0a2e87e44780e040ee62bf85bbed4ef009e44f0ca88c304_s390x as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:a0f75fc098b74a93989ba73ae780026e549e880ccdca020aaf1a7cb61ec99860_arm64 as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:a6263ed1836ad0d34d120a43b09dcbb2e66a1a57cebc70ebbb6e43ef792ea506_ppc64le as a component of Multicluster Global Hub 1.8.2
    After
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:19ac9a531acb74dc7744768b332a66fed272f12e85e4f8fd5e79a6bf13c4f492_amd64 as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:90239f65825c5d90b6ebcc1cd78baf45614c04c939f127a0bf4d462021fcf379_arm64 as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:976e21c6ce39e8902740452881a460ce08e939716053998a95a80c9ccfa7ebb6_ppc64le as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:99cddcc48a66352ea886f8f7cb1f9edd52cbab5c0b728e91b92e3b1d4a48455b_s390x as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:1835c0a3aa84ca5c21ad010dc6f34f24c6a00321b6b7fa77c768352a5b50340a_arm64 as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:3ba4aef856fff40306d12ef5b7b52eef43d60cc24c8463afb03dea3c30118e65_ppc64le as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:853d7401081ff240e619ca0c0973e208af53f11d8f3d00eac0b142096c7f5571_s390x as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:cf0ef75db27ac45c3b4ce70a32a64f16f6730c35239f6de05cb71804d3013be3_amd64 as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:443037c84f8a951ecbad39cbdac276619fa4f7ebce01a47ddafe3c822aaf4a96_arm64 as a component of Multicluster Global Hub 1.6.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:8235df6e5b40770f3f3b9bc38b789286e670d223b3675f67adff1af037e4edd9_amd64 as a component of Multicluster Global Hub 1.6.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:b600b7bc5ed89be2b357e268990b06c21859b7d224c70b3e195414d419357a91_s390x as a component of Multicluster Global Hub 1.6.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:e3579b13e84d230bc559e3a7379718875bb5e546576c1078c703e258354fa5f1_ppc64le as a component of Multicluster Global Hub 1.6.6; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:4ef6d30eae3bb4894056f2c64cf7999cc0ea6da3b95cb943d3f2af8e784a0b61_s390x as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:52378f145b71730fd00936117e7ca5b9759216748a0d453a70cd47606efb384c_arm64 as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:6b9ede59fdcb7f1756369929b3c83c362f30a8a7730d242ccd99d1ac08893881_amd64 as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:af05905391a314b425086e819c7c5336b43a0695ae4cc4fd990a8c657a4a3dea_ppc64le as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:6c0b3f002aac0debb7d52811d21d9f8fc9d0cf2e9d2aaf92a8f47bf8093481c7_amd64 as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:991fc487eaa4357cd0a2e87e44780e040ee62bf85bbed4ef009e44f0ca88c304_s390x as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:a0f75fc098b74a93989ba73ae780026e549e880ccdca020aaf1a7cb61ec99860_arm64 as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:a6263ed1836ad0d34d120a43b09dcbb2e66a1a57cebc70ebbb6e43ef792ea506_ppc64le as a component of Multicluster Global Hub 1.8.2
    Red Hat Product Security ↗
  5. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:67516; removed remediation: access.redhat.com/RHSA-2026:71597; removed vendor advisory: access.redhat.com/RHSA-2026:71597.
    Before
    remediation: access.redhat.com/RHSA-2026:71597 · vendor advisory: access.redhat.com/RHSA-2026:71597
    After
    remediation: access.redhat.com/RHSA-2026:67516
    CNA ↗
  6. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:71597; added vendor advisory: access.redhat.com/RHSA-2026:71597; removed remediation: access.redhat.com/RHSA-2026:67516.
    Before
    remediation: access.redhat.com/RHSA-2026:67516
    After
    remediation: access.redhat.com/RHSA-2026:71597 · vendor advisory: access.redhat.com/RHSA-2026:71597
    access.redhat.com ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: Multicluster Global Hub 1.4.9: 1788355599 < *; Multicluster Global Hub 1.7.3: 1788377424 < *; Multicluster Global Hub 1.8.2: 1788359454 < *
    After
    See the vendor and CVE records for the affected range. · Fixed: Multicluster Global Hub 1.4.9: 1788355599 < *; Multicluster Global Hub 1.5.8: 1789515288 < *; Multicluster Global Hub 1.7.3: 1788377424 < *; Multicluster Global Hub 1.8.2: 1788359454 < *
    CNA ↗
  8. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:19ac9a531acb74dc7744768b332a66fed272f12e85e4f8fd5e79a6bf13c4f492_amd64 as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:90239f65825c5d90b6ebcc1cd78baf45614c04c939f127a0bf4d462021fcf379_arm64 as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:976e21c6ce39e8902740452881a460ce08e939716053998a95a80c9ccfa7ebb6_ppc64le as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:99cddcc48a66352ea886f8f7cb1f9edd52cbab5c0b728e91b92e3b1d4a48455b_s390x as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:4ef6d30eae3bb4894056f2c64cf7999cc0ea6da3b95cb943d3f2af8e784a0b61_s390x as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:52378f145b71730fd00936117e7ca5b9759216748a0d453a70cd47606efb384c_arm64 as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:6b9ede59fdcb7f1756369929b3c83c362f30a8a7730d242ccd99d1ac08893881_amd64 as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:af05905391a314b425086e819c7c5336b43a0695ae4cc4fd990a8c657a4a3dea_ppc64le as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:6c0b3f002aac0debb7d52811d21d9f8fc9d0cf2e9d2aaf92a8f47bf8093481c7_amd64 as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:991fc487eaa4357cd0a2e87e44780e040ee62bf85bbed4ef009e44f0ca88c304_s390x as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:a0f75fc098b74a93989ba73ae780026e549e880ccdca020aaf1a7cb61ec99860_arm64 as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:a6263ed1836ad0d34d120a43b09dcbb2e66a1a57cebc70ebbb6e43ef792ea506_ppc64le as a component of Multicluster Global Hub 1.8.2
    After
    Fixed: registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:19ac9a531acb74dc7744768b332a66fed272f12e85e4f8fd5e79a6bf13c4f492_amd64 as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:90239f65825c5d90b6ebcc1cd78baf45614c04c939f127a0bf4d462021fcf379_arm64 as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:976e21c6ce39e8902740452881a460ce08e939716053998a95a80c9ccfa7ebb6_ppc64le as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:99cddcc48a66352ea886f8f7cb1f9edd52cbab5c0b728e91b92e3b1d4a48455b_s390x as a component of Multicluster Global Hub 1.4.9; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:1835c0a3aa84ca5c21ad010dc6f34f24c6a00321b6b7fa77c768352a5b50340a_arm64 as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:3ba4aef856fff40306d12ef5b7b52eef43d60cc24c8463afb03dea3c30118e65_ppc64le as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:853d7401081ff240e619ca0c0973e208af53f11d8f3d00eac0b142096c7f5571_s390x as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:cf0ef75db27ac45c3b4ce70a32a64f16f6730c35239f6de05cb71804d3013be3_amd64 as a component of Multicluster Global Hub 1.5.8; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:4ef6d30eae3bb4894056f2c64cf7999cc0ea6da3b95cb943d3f2af8e784a0b61_s390x as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:52378f145b71730fd00936117e7ca5b9759216748a0d453a70cd47606efb384c_arm64 as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:6b9ede59fdcb7f1756369929b3c83c362f30a8a7730d242ccd99d1ac08893881_amd64 as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:af05905391a314b425086e819c7c5336b43a0695ae4cc4fd990a8c657a4a3dea_ppc64le as a component of Multicluster Global Hub 1.7.3; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:6c0b3f002aac0debb7d52811d21d9f8fc9d0cf2e9d2aaf92a8f47bf8093481c7_amd64 as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:991fc487eaa4357cd0a2e87e44780e040ee62bf85bbed4ef009e44f0ca88c304_s390x as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:a0f75fc098b74a93989ba73ae780026e549e880ccdca020aaf1a7cb61ec99860_arm64 as a component of Multicluster Global Hub 1.8.2; registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9@sha256:a6263ed1836ad0d34d120a43b09dcbb2e66a1a57cebc70ebbb6e43ef792ea506_ppc64le as a component of Multicluster Global Hub 1.8.2
    Red Hat Product Security ↗
  9. Vendor guidanceAuthoritative vendor guidance changed: removed vendor advisory: access.redhat.com/RHSA-2026:67516; removed vendor advisory: access.redhat.com/RHSA-2026:67842; 1 further removals.
    Before
    remediation: access.redhat.com/RHSA-2026:67516 · vendor advisory: access.redhat.com/RHSA-2026:67516 · vendor advisory: access.redhat.com/RHSA-2026:67842 · 1 more references
    After
    remediation: access.redhat.com/RHSA-2026:67516
    CNA ↗
  10. Vendor guidanceAuthoritative vendor guidance changed: added remediation: access.redhat.com/RHSA-2026:67516; added vendor advisory: access.redhat.com/RHSA-2026:67516; 2 further additions.
    Before
    no authoritative guidance recorded
    After
    remediation: access.redhat.com/RHSA-2026:67516 · vendor advisory: access.redhat.com/RHSA-2026:67516 · vendor advisory: access.redhat.com/RHSA-2026:67842 · 1 more references
    access.redhat.com ↗
  11. Affected versionsThe structured affected or fixed version information changed.
    Before
    See the vendor and CVE records for the affected range. · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    See the vendor and CVE records for the affected range. · Fixed: Multicluster Global Hub 1.4.9: 1788355599 < *; Multicluster Global Hub 1.7.3: 1788377424 < *; Multicluster Global Hub 1.8.2: 1788359454 < *
    CNA ↗
  12. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    access.redhat.com ↗
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-2026-55674↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference · Red Hat RHSA-2026:67516↗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-2026-71576 · cve.blacktree.nl