Missing Authorization in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2026-2900
Published: May 18, 2026
Vulnerability identifier: #VU131688
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-2900
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GitLab, Inc
Affected software:
Gitlab Community Edition
GitLab Enterprise Edition
Gitlab Community Edition
GitLab Enterprise Edition
Detailed vulnerability description
The vulnerability allows a remote user to modify or delete project approval rules.
The vulnerability exists due to missing authorization checks in GraphQL approval rule mutations when instance-level approval rule editing prevention is enabled. A remote privileged user can modify or delete project approval rules to modify or delete project approval rules.
The issue occurs only when instance-level approval rule editing prevention is enabled.
How to mitigate CVE-2026-2900
Install security update from vendor's website.