HIGHCVE-2026-1388Published Modified CNA GitLab
CVE-2026-1388: Inefficient Regular Expression Complexity in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that could have allowed an unauthenticated user to cause regular expression denial of service by sending specially crafted input to a merge request endpoint under certain conditions.
Metrics
- CVSS v3.1
- 7.5
- Severity
- HIGH
- Fixed in
- 18.7.5
- Affected Products
- 1
Fix available
18.7.518.8.518.9.1
Affected packages
- GitLab / GitLab< 18.7.5 (from 9.2) · < 18.8.5 (from 18.8) · < 18.9.1 (from 18.9)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H