CVE-2026-75569: Mce-operator-bundle: all github actions pinned by mutable tag, not commit sha

Severity: high (CVSS 7.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-19 · updated 2026-10-26
Weakness: CWE-1357

Description

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.

Affected products

Red Hat multicluster engine for Kubernetes 2.10: all versions — fixed in 1787263075
Red Hat multicluster engine for Kubernetes 2.11: all versions — fixed in 1787321579
Red Hat multicluster engine for Kubernetes 2.17: all versions — fixed in 1787083639
Red Hat multicluster engine for Kubernetes 2.6: all versions — fixed in 1787317415
Red Hat multicluster engine for Kubernetes 2.8: all versions — fixed in 1787318262
Red Hat multicluster engine for Kubernetes 2.9: all versions — fixed in 1787287150

How to fix

Upgrade to a fixed version: Red Hat multicluster engine for Kubernetes 2.10 1787263075; Red Hat multicluster engine for Kubernetes 2.11 1787321579; Red Hat multicluster engine for Kubernetes 2.17 1787083639; Red Hat multicluster engine for Kubernetes 2.6 1787317415; Red Hat multicluster engine for Kubernetes 2.8 1787318262; Red Hat multicluster engine for Kubernetes 2.9 1787287150. Check the vendor advisory for mitigations.

References

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