GitLab warns of max severity code execution vulnerability

Synthèse

On October 12, 2026, GitLab published a critical patch release for CVE-2026-97229, an integer overflow or wraparound (CWE-190) in the CI/CD regular expression compiler affecting GitLab Community Edition (CE) and Enterprise Edition (EE). GitLab assigned the vulnerability a CVSSv3.1 score of 10.0. Under certain conditions, a remote attacker can execute arbitrary code on an affected GitLab server through a specially crafted regular expression stored in a malicious CI/CD configuration. While the vendor supplied CVSS score indicates that exploitation is fully unauthenticated, in reproducing the exploit it was noted that an attacker must have a mechanism to plant a malicious CI/CD configuration to a repository prior to triggering the vulnerability. On GitLab instances where new users can self register and create projects, this constraint is removed.