XSS in GitLab
CVE-2025-11224
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.10 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated user to execute stored cross-site scripting through improper input validation in the Kubernetes proxy functionality.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (22.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.9% 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: 0.003 · change: -0.000
Affected products
- GitLab — versions 15.10, 18.4, 18.5
Weakness classification (CWE)
References
- about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/ (Patch, Release Notes, Vendor Advisory)
- gitlab.com/gitlab-org/gitlab/-/issues/573223 (issue-tracking, permissions-required, Issue Tracking, Broken Link)
- hackerone.com/reports/3277291 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2025-11224?
- CVE-2025-11224 is a high-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 7.7/10. Published 2026-01-14.
- How severe is CVE-2025-11224?
- High severity. CVSS v3 base score is 7.7 out of 10.