Max-severity GitLab bug allows remote code execution over 12 years of releases

GitLab on Wednesday patched a maximum-severity flaw that could allow unauthenticated attackers to execute arbitrary code on self-managed servers under certain conditions. Affected software releases date back a full 12 years - so upgrade to a fixed version now.

The integer overflow bug, tracked as CVE-2026-110264, affects regular-expression compilation in GitLab Community Edition (CE) and Enterprise Edition (EE), including versions dating back to GitLab 7.0, released in June 2014.

The flaw, “under certain conditions, could have allowed an unauthenticated user to execute arbitrary code on the GitLab server due to integer overflow when compiling a specially crafted regular expression,” the vendor said in its release notes.

GitLab released fixes in versions 19.5.1, 19.4.3, and 19.3.6, and backported the patch to versions 19.2.9, 19.1.9, 19.0.10, and 18.11.13. The vendor “strongly recommends” that all organizations running vulnerable software upgrade to a fixed version “as soon as possible.”

GitLab-managed infrastructure, including GitLab.com and GitLab Dedicated, remains patched, and the vendor also released two …