BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2026
CVE-2026-77403High confidence

RabbitMQ amqp091-go: Denial of Service via Sub-Spec Frame Size Negotiation

rabbitmq · amqp091-go

Official source article: GitHub GHSA-XWWF-M8FG-P9Q2 ↗. Check the applicable product and release in the original source.

8.9HighCVSS 4.0
Recommended action
Patch only the product branches with a verified fix

High technical severity; 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:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.52% 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 rabbitmq amqp091-go 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.

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 · sourcegolang-github-rabbitmq-amqp091-goAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 9 Oct 2026
Debian bookwormbookworm · sourcegolang-github-rabbitmq-amqp091-goAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 9 Oct 2026
Debian forkyforky · sourcegolang-github-rabbitmq-amqp091-goVendor fix publishedDebian records a fixed source-package version for this release.1.14.0-1Debian Security Tracker ↗Source updated 9 Oct 2026
Debian sidsid · sourcegolang-github-rabbitmq-amqp091-goVendor fix publishedDebian records a fixed source-package version for this release.1.14.0-1Debian Security Tracker ↗Source updated 9 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivegolang-github-rabbitmq-amqp091-goUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 8 Oct 2026
Open-source package ranges3 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/rabbitmq/amqp091-goSEMVER: introduced 0; fixed 1.13.01.13.0OSV record ↗aggregator derived · 1 Oct 2026
Gogithub.com/rabbitmq/amqp091-goSEMVER: introduced 0; fixed 1.13.01.13.0OSV record ↗aggregator derived · 1 Oct 2026
gogithub.com/rabbitmq/amqp091-go< 1.13.01.13.0GitHub advisory ↗upstream repository advisory · 17 Sep 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-2026-77403 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitygithub.com/rabbitmq/amqp091-go: RabbitMQ amqp091-go: Denial of Service via AMQP frame size negotiation
9 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • cryostat/cryostat-storage-rhel9 as a component of Cryostat 4
  • custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift
  • custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift
  • multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub
  • openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless
  • rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2
  • rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0
  • quay/clair-rhel8 as a component of Red Hat Quay 3
  • quay/clair-rhel9 as a component of Red Hat Quay 3
Summary
A flaw was found in RabbitMQ amqp091-go, a Go AMQP 0.9.1 client. A malicious or compromised AMQP broker can exploit this by advertising an extremely small frame size during connection negotiation. This can lead to excessive fragmentation of client publications, consuming significant CPU resources and potentially causing a Denial of Service (DoS) by stalling the client or its host.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
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-2026-80807

No EUVD known-exploited evidence

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Connection.openTune in connection.go accepts a server-advertised FrameMax below the AMQP frameMinSize value of 4096 bytes because the connection negotiation loop does not enforce the protocol minimum. A malicious or compromised AMQP broker can therefore advertise an extremely small FrameMax, causing later client publications to be fragmented into excessive numbers of frames and write operations. This can consume CPU and stall the client or its host. This issue is fixed in version 1.13.0.

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
8.9 · CVSS 4.0
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

High technical severity; 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

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Connection.openTune in connection.go accepts a server-advertised FrameMax below the AMQP frameMinSize value of 4096 bytes because the connection negotiation loop does not enforce the protocol minimum. A malicious or compromised AMQP broker can therefore advertise an extremely small FrameMax, causing later client publications to be fragmented into excessive numbers of frames and write operations. This can consume CPU and stall the client or its host. This issue is fixed in version 1.13.0.

What

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Connection.openTune in connection.go accepts a server-advertised FrameMax below the AMQP frameMinSize value of 4096 bytes because the connection negotiation loop does not enforce the protocol minimum. A malicious or compromised AMQP broker can therefore advertise an extremely small FrameMax, causing later client publications to be fragmented into excessive numbers of frames and write operations. This can consume CPU and stall the client or its host. This issue is fixed in version 1.13.0.

Why

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Connection.openTune in connection.go accepts a server-advertised FrameMax below the AMQP frameMinSize value of 4096 bytes because the connection negotiation loop does not enforce the protocol minimum. A malicious or compromised AMQP broker can therefore advertise an extremely small FrameMax, causing later client publications to be fragmented into excessive numbers of frames and write operations. This can consume CPU and stall the client or its host. This issue is fixed in version 1.13.0.

Why

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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.
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 → Allocation of Resources Without Limits or Throttling → 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
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-770 ↗

CWE-770: Allocation of Resources Without Limits or Throttling. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

Common Vulnerability Scoring System 4.0: 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.ATPresentAttack requirements: A particular deployment or execution condition must be present.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VINoneVulnerable-system integrity: No direct loss is represented by this metric.VAHighVulnerable-system availability: A successful attack can cause a major loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SAHighSubsequent-system availability: 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-770
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-80807Official EUVD mapping

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Connection.openTune in connection.go accepts a server-advertised FrameMax below the AMQP frameMinSize value of 4096 bytes because the connection negotiation loop does not enforce the protocol minimum. A malicious or compromised AMQP broker can therefore advertise an extremely small FrameMax, causing later client publications to be fragmented into excessive numbers of frames and write operations. This can consume CPU and stall the client or its host. This issue is fixed in version 1.13.0.

Official EUVD record ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260923Security Bulletin 23 Sep 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 23 Sep 2026, published on 23 September 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.
Fix availability varies by product
Affected
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
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 16 Sept 2026 · Last source change 16 Sept 2026, 15:43 UTC · CWE-770 · Allocation of Resources Without Limits or Throttling

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 2026-09-17
European sourceENISA EUVD · EUVD-2026-80807
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD awaiting 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
    cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0; quay/clair-rhel8 as a component of Red Hat Quay 3 · Fixed: opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@src as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; registry.redhat.io/quay/quay-rhel8@sha256:bf7ee07a25cd269986e054e0b04daebcb250b04fc3de60055a17142a932f5530_ppc64le as a component of Red Hat Quay 3.9; registry.redhat.io/quay/quay-rhel8@sha256:f33464ccc07e05781c2ec093df7fd9093b5ab0aae6435c11d632cc1332a560ee_amd64 as a component of Red Hat Quay 3.9; registry.redhat.io/quay/quay-rhel8@sha256:fb430174cec4428f0824787842e18f04d5eea0f5355cc90d1919ee1007086202_s390x as a component of Red Hat Quay 3.9
    After
    cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0; quay/clair-rhel8 as a component of Red Hat Quay 3; quay/clair-rhel9 as a component of Red Hat Quay 3 · Fixed: opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@src as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; registry.redhat.io/quay/quay-rhel8@sha256:4795fd6aeefebcc69f1e3bdea5de2a0de743e9823bab09c540fac60ce97457ed_amd64 as a component of Red Hat Quay 3.10; registry.redhat.io/quay/quay-rhel8@sha256:92cb4fa377bf8526ff5e5b6162fcceddaf9a0cc134c72b00886d7a01810a8039_s390x as a component of Red Hat Quay 3.10; registry.redhat.io/quay/quay-rhel8@sha256:e64be4e2d395ed76a2995da770549a369049d3b5ab2809e0a8321242cd394666_ppc64le as a component of Red Hat Quay 3.10; registry.redhat.io/quay/quay-rhel8@sha256:0d940ea3606dc30dfe84e7ff948001bbc8b8f9c4b157f2370523eb2cb32beb45_ppc64le as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:2f59d49e7181a61c3be8fd05af718a9d70ad3cc56778fd7d36f7d8a3cd8a8eab_arm64 as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:4c215f73501c07019a75a93f71625003d2f9965f012ff306703ae9f06e5a2090_s390x as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:e6a20eedbd78dd92041908c07446e3e9a1e29dade3e4d968c74f85c38c157078_amd64 as a component of Red Hat Quay 3.12; registry.redhat.io/quay/quay-rhel8@sha256:bf7ee07a25cd269986e054e0b04daebcb250b04fc3de60055a17142a932f5530_ppc64le as a component of Red Hat Quay 3.9; registry.redhat.io/quay/quay-rhel8@sha256:f33464ccc07e05781c2ec093df7fd9093b5ab0aae6435c11d632cc1332a560ee_amd64 as a component of Red Hat Quay 3.9; registry.redhat.io/quay/quay-rhel8@sha256:fb430174cec4428f0824787842e18f04d5eea0f5355cc90d1919ee1007086202_s390x as a component of Red Hat Quay 3.9
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0; quay/clair-rhel8 as a component of Red Hat Quay 3; quay/clair-rhel9 as a component of Red Hat Quay 3 · Fixed: opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@src as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images
    After
    cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0; quay/clair-rhel8 as a component of Red Hat Quay 3 · Fixed: opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@src as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images; registry.redhat.io/quay/quay-rhel8@sha256:bf7ee07a25cd269986e054e0b04daebcb250b04fc3de60055a17142a932f5530_ppc64le as a component of Red Hat Quay 3.9; registry.redhat.io/quay/quay-rhel8@sha256:f33464ccc07e05781c2ec093df7fd9093b5ab0aae6435c11d632cc1332a560ee_amd64 as a component of Red Hat Quay 3.9; registry.redhat.io/quay/quay-rhel8@sha256:fb430174cec4428f0824787842e18f04d5eea0f5355cc90d1919ee1007086202_s390x as a component of Red Hat Quay 3.9
    Red Hat Product Security ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-operator-bundle as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0; quay/clair-rhel8 as a component of Red Hat Quay 3; quay/clair-rhel9 as a component of Red Hat Quay 3 · Fixed: opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@src as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images
    After
    cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0; quay/clair-rhel8 as a component of Red Hat Quay 3; quay/clair-rhel9 as a component of Red Hat Quay 3 · Fixed: opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@src as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  4. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-77403 to remediation: access.redhat.com/CVE-2026-77403.
    Before
    remediation: access.redhat.com/CVE-2026-77403
    After
    remediation: access.redhat.com/CVE-2026-77403
    Red Hat Product Security ↗
  5. Remediation statusRemediation status changed from Mitigation available to Patch available.
    Before
    Mitigation available
    After
    Patch available
    Red Hat Product Security ↗
  6. Affected versionsThe structured affected or fixed version information changed.
    Before
    cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-operator-bundle as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; opentelemetry-collector-contrib.src as a component of Red Hat Hardened Images; rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0; quay/clair-rhel8 as a component of Red Hat Quay 3; quay/clair-rhel9 as a component of Red Hat Quay 3
    After
    cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-operator-bundle as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0; quay/clair-rhel8 as a component of Red Hat Quay 3; quay/clair-rhel9 as a component of Red Hat Quay 3 · Fixed: opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@aarch64 as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@src as a component of Red Hat Hardened Images; opentelemetry-collector-contrib-0:0.161.0-0.1.hum1@x86_64 as a component of Red Hat Hardened Images
    Red Hat Product Security ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-admission-webhooks-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9-operator as a component of Custom Metric Autoscaler operator for Red Hat Openshift; multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-operator-bundle as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; opentelemetry-collector-contrib.src as a component of Red Hat Hardened Images; rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0; quay/clair-rhel8 as a component of Red Hat Quay 3; quay/clair-rhel9 as a component of Red Hat Quay 3
    After
    cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift; multicluster-globalhub/multicluster-globalhub-grafana-rhel9 as a component of Multicluster Global Hub; openshift-serverless-1/kn-plugin-event-sender-rhel9 as a component of OpenShift Serverless; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-operator-bundle as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; opentelemetry-collector-contrib.src as a component of Red Hat Hardened Images; rhoso-operators/rabbitmq-cluster-rhel9-operator as a component of Red Hat OpenStack Platform 18.0; quay/clair-rhel8 as a component of Red Hat Quay 3; quay/clair-rhel9 as a component of Red Hat Quay 3
    Red Hat Product Security ↗
  8. ENISA EUVD mappingEUVD-2026-80807 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-80807"}
    ENISA EUVD ↗
  9. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
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-2026-80807↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference · GitHub GHSA-XWWF-M8FG-P9Q2↗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-2026-77403 · cve.blacktree.nl