Description
An issue has been discovered in GitLab CE/EE affecting all versions from 13.2 before 18.0.6, 18.1 before 18.1.4, and 18.2 before 18.2.2 that could have allowed authenticated users to create a denial of service condition by sending specially crafted markdown payloads to the Wiki feature.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 13.2 – < 18.0.6, 18.1 – < 18.1.4, 18.2 – < 18.2.2 | 18.0.6 |
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-2025-1816 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 13, 2025
References
- GitLab Issue #528995 issue-tracking permissions-required
- HackerOne Bug Bounty Report #3058879 technical-description exploit permissions-required