Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.3 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that, under certain conditions, an authenticated user could have induced a targeted user to perform unintended state-changing HTTP requests due to improper sanitization of user-controlled data in the Markdown JSON table renderer.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 15.3 – < 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/621447
- HackerOne Bug Bounty Report #3917471 technical-description exploit permissions-required
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/