An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Gitlab | Gitlab | 13.0.0 (including) | 14.6.5 (excluding) |
| Gitlab | Gitlab | 14.7.0 (including) | 14.7.4 (excluding) |
| Gitlab | Gitlab | 14.8 (including) | 14.8.2 (excluding) |
| Gitlab | Ubuntu | esm-apps/xenial | * |
| Gitlab | Ubuntu | trusty | * |
| Gitlab | Ubuntu | xenial | * |
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/343898
- https://hackerone.com/reports/1089609
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/343898
- https://hackerone.com/reports/1089609