Auth bypass in Gitlab
CVE-2025-10871
An issue has been discovered in GitLab EE affecting all versions from 16.6 before 18.2.7, 18.3 before 18.3.3, and 18.4 before 18.4.1. Project Maintainers can exploit a vulnerability where they can assign custom roles to users with permissions exceeding their own, effectively granting themselves elevated privileges.
Vulnerability class: Broken Access Control
EPSS: 0.004 (27.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L.
Affected products
- Gitlab — versions 18.4.0, 18.3, 18.4
Weakness classification (CWE)
References
- cve@gitlab.com (issue-tracking, permissions-required, Broken Link)
Frequently asked questions
- What is CVE-2025-10871?
- CVE-2025-10871 is a low-severity vulnerability in Gitlab, classified under Missing Authorization. CVSS score: 3.8/10. Published 2025-09-26.
- How severe is CVE-2025-10871?
- Low severity. CVSS v3 base score is 3.8 out of 10.