Critical GitLab Vulnerability: CVE-2026-110264 (CVSS 10.0)

Critical GitLab Vulnerability: CVE-2026-110264 (CVSS 10.0)

GitLab disclosed a critical flaw on 21 October 2026 affecting self-managed GitLab Community and Enterprise Edition.
Under certain conditions, an unauthenticated attacker could execute code through an integer overflow in the regular-expression compiler.

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A GitLab-specific version assessment is undergoing validation and can flag potentially affected installations when trustworthy version information is available.

Upgrade affected systems to GitLab 19.5.1, 19.4.3, 19.3.6, or the applicable patched backport (19.2.9, 19.1.9, 19.0.10, 18.11.13).

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