CVE-2025-9957

EUVD-2025-209556
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.2 before 18.9.6, 18.10 before 18.10.4, and 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user with project owner permissions to bypass group fork prevention settings due to improper authorization checks.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
2.7 LOW
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 4%
Affected Products (NVD)
VendorProductVersion
gitlabgitlab
11.2.0 ≤
𝑥
< 18.9.6
gitlabgitlab
11.2.0 ≤
𝑥
< 18.9.6
gitlabgitlab
18.10.0 ≤
𝑥
< 18.10.4
gitlabgitlab
18.10.0 ≤
𝑥
< 18.10.4
gitlabgitlab
18.11.0
gitlabgitlab
18.11.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/
https://gitlab.com/gitlab-org/gitlab/-/work_items/567781
https://hackerone.com/reports/3275222