Auth bypass in Gitlab
CVE-2026-4916
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user with custom role permissions to demote or remove higher-privileged group members due to improper authorization checks on member management operations.
Vulnerability class: Broken Access Control
EPSS: 0.003 (27.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Gitlab — versions 18.2, 18.9, 18.10
Weakness classification (CWE)
References
- cve@gitlab.com (Permissions Required, technical-description, permissions-required, exploit)
- cve@gitlab.com (Broken Link)
- cve@gitlab.com (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-4916?
- CVE-2026-4916 is a low-severity vulnerability in Gitlab, classified under Missing Authorization. CVSS score: 2.7/10. Published 2026-04-08.
- How severe is CVE-2026-4916?
- Low severity. CVSS v3 base score is 2.7 out of 10.