CVE-2025-9957

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.

CVSS 3.1

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

EPSS

0.4% chance of exploitation in the next 30 days; higher than 31% of CVEs (scores of 2026-10-25)

CWE

CWE-863

Published

2026-04-22

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• gitlab:gitlab

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

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