XSS in GitLab
CVE-2026-16627
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to escalate privileges due to improper sanitization of HTML content rendered in a CI job modal.
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: 0.005 (38.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- GitLab — versions 19.2
Weakness classification (CWE)
References
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-2-released/ (Release Notes, Vendor Advisory)
- gitlab.com/gitlab-org/gitlab/-/work_items/606678 (Broken Link)
- hackerone.com/reports/3880796 (Permissions Required, technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2026-16627?
- CVE-2026-16627 is a high-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 7.7/10. Published 2026-08-12.
- How severe is CVE-2026-16627?
- High severity. CVSS v3 base score is 7.7 out of 10.