CSRF in GitLab
CVE-2026-3857
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to execute arbitrary GraphQL mutations on behalf of authenticated users due to insufficient CSRF protection.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.2% 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: +0.002
Affected products
- GitLab — versions 18.10.0, 18.10, 17.10
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/work_items/592828 (Broken Link)
- hackerone.com/reports/3584382 (Permissions Required, technical-description, permissions-required, exploit)
- about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/ (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-3857?
- CVE-2026-3857 is a high-severity vulnerability in GitLab, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.1/10. Published 2026-03-25.
- How severe is CVE-2026-3857?
- High severity. CVSS v3 base score is 8.1 out of 10.