vulnerability
Gitlab Gitlab: CVE-2026-1388: Inefficient Regular Expression Complexity
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Feb 25, 2026 | Feb 26, 2026 | Mar 25, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Feb 25, 2026
Added
Feb 26, 2026
Modified
Mar 25, 2026
Description
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.
Solution
gitlab-gitlab-upgrade-latest
References
Rapid7 Labs
2026 Global Threat Landscape Report
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