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.
Scores
CVSS v3
7.5
EPSS
0.0005
EPSS Percentile
14.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1333
Status
published
Products (2)
gitlab/gitlab
18.9.0 (2 CPE variants)
gitlab/gitlab
9.2.0 - 18.7.5 (2 CPE variants)
Published
Feb 25, 2026
Tracked Since
Feb 26, 2026