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.

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

EPSS: 0.090 (94.7th percentile) — read the EPSS interpretation.

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.

Affected products

Gitlab — versions 17.11, 18.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

cve@gitlab.com (issue-tracking, permissions-required, Broken Link)
cve@gitlab.com (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.