Vulnerability in GitLab
CVE-2026-4524
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.9.1 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 access confidential issue content in public projects without proper authorization due to improper authorization checks.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- GitLab — versions 18.9.1, 18.10, 18.11
Weakness classification (CWE)
Public proof-of-concept exploits
References
- gitlab.com/gitlab-org/gitlab/-/work_items/594295 (Broken Link)
- hackerone.com/reports/3597717 (Permissions Required, technical-description, permissions-required, exploit)
- about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/ (Release Notes)
Frequently asked questions
- What is CVE-2026-4524?
- CVE-2026-4524 is a medium-severity vulnerability in GitLab, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 6.5/10. Published 2026-05-14.
- How severe is CVE-2026-4524?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2026-4524 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.