An issue has been discovered in GitLab CE/EE affecting all versions starting from 8.14 before 16.0.8, all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. A Regular Expression Denial of Service was possible via sending crafted payloads which use AutolinkFilter to the preview_markdown endpoint.
| Software | From | Fixed in |
|---|---|---|
| gitlab / gitlab | 16.2 | 16.2.2 |
| gitlab / gitlab | 16.1 | 16.1.3 |
| gitlab / gitlab | 8.14 | 16.0.8 |