GoKawiilGitLab issues critical patch for CVSS 10.0 regex compiler flaw (CVE-2026-110264)
GitLab released versions 19.5.1, 19.4.3, 19.3.6, 19.2.9, 19.1.9, 19.0.10 and 18.11.13 for its Community and Enterprise Editions on October 21, 2026, fixing an integer overflow vulnerability in its regular expression compiler tracked as CVE-2026-110264. GitLab.com is already running the fix, and GitLab Dedicated tenants on certain internal builds already include it, but self-managed installations must upgrade manually.
GoKawiil's interpretation of the reporting above, not reported fact.
An integer overflow in a regex compiler can potentially be exploited to crash services or corrupt memory, which is serious for a platform that hosts source code and CI/CD pipelines for countless organizations. The urgency of an ad-hoc critical patch, rather than GitLab's usual biweekly schedule, suggests the vulnerability was assessed as high severity, though full technical details will remain undisclosed for 90 days per GitLab's standard disclosure policy.
- GitLab patched a critical integer overflow flaw (CVE-2026-110264) across seven version branches on October 21, 2026.
- GitLab.com and properly updated GitLab Dedicated tenants are already protected; self-managed users must upgrade immediately.
- Technical details of the vulnerability will be publicly disclosed 90 days after the patch release, per GitLab's security policy.
Source: docs.gitlab.com, 2026-10-21
Published there as: “GitLab CVSS 10.0 Integer Overflow issue”
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