Auth bypass in GitLab
CVE-2025-12555
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.1 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that, under certain conditions, could have allowed an authenticated user to access previous pipeline job information on projects with repository and CI/CD disabled due to improper authorization checks.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (13.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- GitLab — versions 15.1, 18.8, 18.9
Weakness classification (CWE)
References
- hackerone.com/reports/3354642 (Permissions Required, technical-description, permissions-required, exploit)
- gitlab.com/gitlab-org/gitlab/-/work_items/579126 (Broken Link)
- about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/ (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-12555?
- CVE-2025-12555 is a medium-severity vulnerability in GitLab, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-03-11.
- How severe is CVE-2025-12555?
- Medium severity. CVSS v3 base score is 4.3 out of 10.