CVE-2025-9957

LOW 2.7

Incorrect Authorization in GitLab

CVSS Score

2.7

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	gitlab
Product	gitlab
Ecosystems	DevTools
Industries	Technology
Published	Apr 22, 2026
Last Updated	Apr 22, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

GitLab / GitLab

11.2 < 18.9.6 18.10 < 18.10.4 18.11 < 18.11.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

hackerone.com: https://hackerone.com/reports/3275222 gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/work_items/567781 about.gitlab.com: https://about.gitlab.com/releases/2026/04/22/patch-release-gitlab-18-11-1-released/

Credits

Thanks [theluci](https://hackerone.com/theluci) for reporting this vulnerability through our HackerOne bug bounty program