Description
An issue has been discovered in GitLab EE affecting all versions starting from 10.5 before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. It was possible for an attacker to cause a client-side denial of service using malicious crafted mermaid diagram input.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 10.5 – < 16.4.3, 16.5 – < 16.5.3, 16.6 – < 16.6.1 | 16.4.3 |
Advisories 1
- WID-SEC-2023-3041 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 3, 2026
References
- GitLab Issue #424882 issue-tracking permissions-required
- HackerOne Bug Bounty Report #2137421 technical-description exploit permissions-required