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
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
Upgrade to versions 18.7.5, 18.8.5, 18.9.1 or above.
Workaround
No workaround given by the vendor.
References
History
Wed, 25 Feb 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Inefficient Regular Expression Complexity in GitLab | |
| First Time appeared |
Gitlab
Gitlab gitlab |
|
| Weaknesses | CWE-1333 | |
| CPEs | cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Gitlab
Gitlab gitlab |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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MITRE
Status: PUBLISHED
Assigner: GitLab
Published:
Updated: 2026-02-25T20:05:05.289Z
Reserved: 2026-01-23T20:33:20.246Z
Link: CVE-2026-1388
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-02-25T21:16:36.500
Modified: 2026-02-25T21:16:36.500
Link: CVE-2026-1388
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses