Auth bypass in GitLab
CVE-2026-2238
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.5 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an unauthenticated user to view confidential issue references on public projects due to improper authorization checks.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (38.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- GitLab — versions 19.1.0, 17.5, 19.1
Weakness classification (CWE)
References
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-1-released/ (Release Notes, Vendor Advisory)
- gitlab.com/gitlab-org/gitlab/-/work_items/589186 (Broken Link)
- hackerone.com/reports/3543011 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2026-2238?
- CVE-2026-2238 is a medium-severity vulnerability in GitLab, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-06-25.
- How severe is CVE-2026-2238?
- Medium severity. CVSS v3 base score is 5.3 out of 10.