GitLab CE/EE, versions 10.3 up to 11.x before 11.3.11, 11.4 before 11.4.8, and 11.5 before 11.5.1, are vulnerable to an XSS vulnerability in Markdown fields via Mermaid.
| Software | From | Fixed in |
|---|---|---|
| gitlab / gitlab | 11.4.0 | 11.4.8 |
| gitlab / gitlab | 11.5.0 | 11.5.1 |
| gitlab / gitlab | 11.0.0 | 11.3.11 |