Auth bypass in GitLab
CVE-2026-8030
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.0 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an authenticated user to prevent another user from modifying their group settings due to improper validation of group URL slugs during namespace transfers.
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:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (43.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/work_items/599240 (Issue Tracking)
- hackerone.com/reports/3689558 (Permissions Required, technical-description, permissions-required, exploit)
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/ (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-8030?
- CVE-2026-8030 is a medium-severity vulnerability in GitLab, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-16.
- How severe is CVE-2026-8030?
- Medium severity. CVSS v3 base score is 4.3 out of 10.