Auth bypass in GitLab
CVE-2026-6567
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.8 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user with reporter role to access restricted CI artifact report content they were not authorized to, due to missing 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
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/work_items/597328
- hackerone.com/reports/3603015 (technical-description, permissions-required, exploit)
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/
Frequently asked questions
- What is CVE-2026-6567?
- CVE-2026-6567 is a medium-severity vulnerability in GitLab, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-10-13.
- How severe is CVE-2026-6567?
- Medium severity. CVSS v3 base score is 4.3 out of 10.