XSS in GitLab
CVE-2026-19619
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an unauthenticated user to execute arbitrary JavaScript in the context of a targeted user's session due to improper sanitization of pasted HTML content in the Content Editor.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 23.1% 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: +0.001
Affected products
Weakness classification (CWE)
References
- gitlab.com/gitlab-org/gitlab/-/work_items/612792 (Broken Link)
- hackerone.com/reports/3808840 (Permissions Required, technical-description, permissions-required, exploit)
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/ (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-19619?
- CVE-2026-19619 is a medium-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 4.7/10. Published 2026-09-16.
- How severe is CVE-2026-19619?
- Medium severity. CVSS v3 base score is 4.7 out of 10.