Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that could have allowed an unauthenticated user to cause a Denial of Service condition by sending specifically crafted requests containing malicious JSON payloads.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 17.10 – < 18.4.5, 18.5 – < 18.5.3, 18.6 – < 18.6.1 | 18.4.5 |
Advisories 2
- NCSC-2025-0377 Kwetsbaarheden verholpen in GitLab NCSC-NL (Netherlands) · Nov 27, 2025
- WID-SEC-2025-2684 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 26, 2025
References
- GitLab Security Release Blog Post vendor-advisory
- GitLab Issue #579168 issue-tracking permissions-required
- HackerOne Bug Bounty Report #3362239 technical-description exploit permissions-required