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Advisory severityHigh8.0Red Hat Linux

High [CVE-2026-76139] Bundle build execs unpinned stolostron/release@master with full build credentials

This high-severity Red Hat Linux advisory covers CVE-2026-76139 affecting Red Hat Advanced Cluster Management for Kubernetes 2.11, Red Hat Advanced Cluster Management for Kubernetes 2.13, Red Hat Advanced Cluster Management for Kubernetes 2.14.

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

CVE-2026-76139 Source published Source updated

VulniPulse record published Record updated

CVE-2026-76139
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

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Summary

A flaw was found in acm-operator-bundle. The build process for this component downloads and runs a script from a remote source without verifying its authenticity or integrity.

This script gains access to sensitive credentials, such as GitHub access tokens and registry passwords, used in the build environment. A remote attacker could exploit this vulnerability to inject malicious code, leading to unauthorized access to build resources and potential compromise of the resulting operator bundle.

It allows for the execution of unverified external scripts with elevated privileges, including access to sensitive credentials and write access to the bundle PR, which could compromise the integrity of shipped bundles. Red Hat severity: Important — CVSS 8 (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H).

Weakness: CWE-829.

Affected Red Hat products: Red Hat Advanced Cluster Management for Kubernetes 2.11; Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat Advanced Cluster Management for Kubernetes 2.16; Red Hat Advanced Cluster Management for Kubernetes 2.17.

Red Hat fixing advisory: RHSA-2026:60404, RHSA-2026:60403, RHSA-2026:60401, RHSA-2026:60402, RHSA-2026:60400, RHSA-2026:60399.

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
  • rhacm2/acm-operator-bundle:1787704547
  • rhacm2/acm-operator-bundle:1787712120
  • rhacm2/acm-operator-bundle:1787704476
  • rhacm2/acm-operator-bundle:1787738299
  • rhacm2/acm-operator-bundle:1787711895
  • rhacm2/acm-operator-bundle:1787704231
  • RHSA-2026:60404
  • RHSA-2026:60403
  • RHSA-2026:60401
  • RHSA-2026:60402
  • RHSA-2026:60400
  • RHSA-2026:60399

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

Mitigation checklist

Recommended fix / mitigation
  • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

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

Discussion(0)

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