Auth bypass in GitLab
CVE-2026-6883
GitLab has remediated an issue in GitLab EE affecting all versions from 15.7 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user to bypass merge request approval requirements due to improper cleanup of orphaned policy records.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.6 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.1% 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 15.7, 18.10, 18.11
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/work_items/596350 (Not Applicable)
- about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/ (Release Notes)
Frequently asked questions
- What is CVE-2026-6883?
- CVE-2026-6883 is a low-severity vulnerability in GitLab, classified under Missing Authorization. CVSS score: 2.6/10. Published 2026-05-14.
- How severe is CVE-2026-6883?
- Low severity. CVSS v3 base score is 2.6 out of 10.