Auth bypass in GitLab
CVE-2026-8667
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.6 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer role to modify certain package registry metadata without the required maintainer-level permissions 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:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.0% 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: 0.003 · change: +0.001
Affected products
- GitLab — versions 17.6, 19.1, 19.2
Weakness classification (CWE)
References
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-2-released/ (Release Notes, Vendor Advisory)
- gitlab.com/gitlab-org/gitlab/-/work_items/600228 (Broken Link)
- hackerone.com/reports/3598070 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2026-8667?
- CVE-2026-8667 is a medium-severity vulnerability in GitLab, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-08-12.
- How severe is CVE-2026-8667?
- Medium severity. CVSS v3 base score is 4.3 out of 10.