CVE-2025-9957

Incorrect Authorization in GitLab

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.

Affected

GitLab

CVSS v3.1 GITLAB

2.7 LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

EPSS

0.38% chance of exploitation in the next 30 days, 31st percentile

Published

2026-04-22

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3275222

Security advisories

• https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released

References

• CVE Record
• NVD entry