GitLab 12.2.2 and below contains a security vulnerability that allows a guest user in a private project to see the merge request ID associated to an issue via the activity timeline.
| Software | From | Fixed in |
|---|---|---|
| gitlab / gitlab | 12.2.0 | 12.2.3 |
| gitlab / gitlab | 12.1.0 | 12.1.8 |
| gitlab / gitlab | 11.2.0 | 12.0.8 |