Description
An issue has been discovered in GitLab CE/EE affecting all versions from 16.11 before 18.1.6, 18.2 before 18.2.6, and 18.3 before 18.3.2 that could have allowed authenticated users to make unintended internal requests through proxy environments by injecting crafted sequences.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 16.11 – < 18.1.6, 18.2 – < 18.2.6, 18.3 – < 18.3.2 | 18.1.6 |
Advisories 2
- NCSC-2025-0288 Kwetsbaarheden verholpen in GitLab CE/EE NCSC-NL (Netherlands) · Sep 12, 2025
- WID-SEC-2025-2024 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 11, 2025
References
- https://about.gitlab.com/releases/2025/09/10/patch-release-gitlab-18-3-2-released/
- GitLab Issue #550766 issue-tracking permissions-required
- HackerOne Bug Bounty Report #3162711 technical-description exploit permissions-required