In all versions of GitLab CE/EE since version 12.0, a lower privileged user can import users from projects that they don't have a maintainer role on and disclose email addresses of those users.
| Software | From | Fixed in |
|---|---|---|
| gitlab / gitlab | 14.2 | 14.2.5 |
| gitlab / gitlab | 14.3.0 | 14.3.0.x |
| gitlab / gitlab | 12.0 | 14.1.7 |