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Advisory severityHigh7.7Red Hat Linux

High [CVE-2026-75569] All GitHub Actions pinned by mutable tag, not commit SHA

This high-severity Red Hat Linux advisory covers CVE-2026-75569 affecting multicluster engine for Kubernetes 2.11, multicluster engine for Kubernetes 2.17, multicluster engine for Kubernetes 2.6.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-75569 Source published Source updated

VulniPulse record published Record updated

CVE-2026-75569
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

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Summary

A flaw was found in mce-operator-bundle. The build process fetches and executes scripts from a remote repository without performing integrity checks, such as commit pinning or signature verification.

This allows a malicious actor with write access to the remote repository to inject and execute arbitrary code during the build. The consequence is a compromised build process, potentially leading to the distribution of malicious software.

The build logic is fetched from a mutable master branch without integrity checks or commit pinning, allowing for the execution of untrusted code if the source repository is compromised. This could impact the integrity of delivered Red Hat products.

Red Hat severity: Important — CVSS 7.7 (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N). Weakness: CWE-1357.

Affected Red Hat products: multicluster engine for Kubernetes 2.1; multicluster engine for Kubernetes 2.11; multicluster engine for Kubernetes 2.17; multicluster engine for Kubernetes 2.6; multicluster engine for Kubernetes 2.8; multicluster engine for Kubernetes 2.9.

Red Hat fixing advisory: RHSA-2026:59637, RHSA-2026:59636, RHSA-2026:59634, RHSA-2026:59643, RHSA-2026:59642, RHSA-2026:59638.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 21 days ago·verify at source

Fixed versions
  • multicluster-engine/mce-operator-bundle:1787263075
  • multicluster-engine/mce-operator-bundle:1787321579
  • multicluster-engine/mce-operator-bundle:1787083639
  • multicluster-engine/mce-operator-bundle:1787317415
  • multicluster-engine/mce-operator-bundle:1787318262
  • multicluster-engine/mce-operator-bundle:1787287150
  • RHSA-2026:59637
  • RHSA-2026:59636
  • RHSA-2026:59634
  • RHSA-2026:59643
  • RHSA-2026:59642
  • RHSA-2026:59638

Official advisory · high-confidence parse· fetched 21 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • The vulnerability resides within the build process of `mce-operator-bundle`, specifically concerning the fetching of build logic from a mutable source without integrity verification. As this issue pertains to the build-time integrity of the software, there are no direct runtime configuration or operational controls available for users to mitigate this vulnerability in deployed Red Hat products.

Official advisory · high-confidence parse· fetched 21 days ago·verify at source

Discussion(0)

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