Description
An issue has been discovered in GitLab CE/EE affecting all versions from 17.9 before 17.10.8, 17.11 before 17.11.4, and 18.0 before 18.0.2. Improper output encoding in the snipper viewer functionality lead to Cross-Site scripting attacks.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 17.9 – < 17.10.8, 17.11 – < 17.11.4, 18.0 – < 18.0.2 | 17.10.8 |
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 1
- WID-SEC-2025-1315 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 11, 2025
References
- GitLab Issue #524636 issue-tracking permissions-required
- HackerOne Bug Bounty Report #2973939 technical-description exploit permissions-required