Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 19.0 – < 19.1.8, 19.2 – < 19.2.6, 19.3 – < 19.3.2 | 19.1.8 |
Advisories 1
- WID-SEC-2026-3315 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 29, 2026
References
- https://gitlab.com/gitlab-org/gitlab/-/work_items/612792
- HackerOne Bug Bounty Report #3808840 technical-description exploit permissions-required
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/