CVE-2025-9957 PUBLISHED

Incorrect Authorization in GitLab

Assigner: GitLab
Reserved: 03.09.2025 Published: 22.04.2026 Updated: 22.04.2026

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.

Metrics

CVSS 3.1

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

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	High	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	GitLab
Product	GitLab
Versions	Default: unaffected affected from 11.2 to 18.9.6 (excl.) affected from 18.10 to 18.10.4 (excl.) affected from 18.11 to 18.11.1 (excl.)

Solutions

Upgrade to versions 18.9.6, 18.10.4, 18.11.1 or above.

Credits

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

References

Problem Types

CWE-863: Incorrect Authorization CWE