CVE-2026-110264: Integer Overflow or Wraparound in GitLab
An issue has been discovered in GitLab CE/EE affecting all versions from 7.0 before 18.11.13, 19.0 before 19.0.10, 19.1 before 19.1.9, 19.2 before 19.2.9, 19.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, 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.
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
Which GitLab instances are exposed?
GitLab CE/EE versions from 7.0 up to, but not including, 18.11.13, 19.0.10, 19.1.9, 19.2.9, 19.3.6, 19.4.3, or 19.5.1 are affected. The issue applies when the conditions needed to compile a specially crafted regular expression are present.
Does exploitation require an account or user interaction?
No. The vulnerability is remotely exploitable with low attack complexity and requires neither authentication nor user interaction.
What could an attacker achieve?
Under certain conditions, an unauthenticated attacker could execute arbitrary code on the GitLab server. The reported impact includes high confidentiality, integrity, and availability consequences.
What is the remediation?
Upgrade GitLab CE/EE to 18.11.13, 19.0.10, 19.1.9, 19.2.9, 19.3.6, 19.4.3, 19.5.1, or a later version, as appropriate for the deployment's release line.