Auth bypass in GitLab
CVE-2025-5121
An issue has been discovered in GitLab CE/EE affecting all versions from 17.11 before 17.11.4 and 18.0 before 18.0.2. A missing authorization check may have allowed compliance frameworks to be applied to projects outside the compliance framework's group.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.124 (96.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.103 · newest: 0.124 · change: +0.021
Affected products
- GitLab — versions 17.11, 18.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.com/gitlab-org/gitlab/-/issues/545429 (issue-tracking, permissions-required, Broken Link)
- hackerone.com/reports/3153908 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2025-5121?
- CVE-2025-5121 is a high-severity vulnerability in GitLab, classified under Missing Authorization. CVSS score: 8.5/10. Published 2025-06-20.
- How severe is CVE-2025-5121?
- High severity. CVSS v3 base score is 8.5 out of 10.
- Is CVE-2025-5121 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.