Description
An issue has been discovered in GitLab CE/EE affecting all versions before 17.10.7, 17.11 before 17.11.3, and 18.0 before 18.0.1. An attacker may be able to reveal masked or hidden CI variables (that they did not author) in the WebUI, by simply creating their own variable and observing the HTTP response.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | < 17.10.7, 17.11 – < 17.11.3, 18.0 – < 18.0.1 | 17.10.7 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | gitlab | No fix yet | — |
Advisories 2
- NCSC-2025-0176 Kwetsbaarheden verholpen in GitLab NCSC-NL (Netherlands) · May 23, 2025
- WID-SEC-2025-1117 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 22, 2025
References
- GitLab Issue #524455 issue-tracking permissions-required