Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gitlab | Gitlab | >= 7.0.0, < 18.11.13 |
Related Weaknesses (CWE)
References
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/Release NotesVendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/work_items/633633Permissions Required
- https://hackerone.com/reports/4093475Permissions Required
- https://www.ruby-lang.org/en/news/2026/10/23/regexp-fixes-for-gitlab-cves/
FAQ
What is CVE-2026-110264?
CVE-2026-110264 is a vulnerability with a CVSS score of 10.0 (CRITICAL). 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 1...
How severe is CVE-2026-110264?
CVE-2026-110264 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-110264?
Check the references section above for vendor advisories and patch information. Affected products include: Gitlab Gitlab.