Auth bypass in GitLab
CVE-2026-16301
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.7 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 Developer role to execute CI/CD pipelines on protected branches without authorization due to improper authorization checks in the downstream pipeline creation service.
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:L/PR:L/UI:N/S:C/C:L/I:H/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/606501
- hackerone.com/reports/3853866 (technical-description, permissions-required, exploit)
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-4-2-released/
Frequently asked questions
- What is CVE-2026-16301?
- CVE-2026-16301 is a high-severity vulnerability in GitLab, classified under Incorrect Authorization. CVSS score: 8.5/10. Published 2026-10-13.
- How severe is CVE-2026-16301?
- High severity. CVSS v3 base score is 8.5 out of 10.