Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 8.3 before 18.5.5, 18.6 before 18.6.3, and 18.7 before 18.7.1 that could have allowed an authenticated user to create a denial of service condition by providing crafted responses to external API calls.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 8.3 – < 18.5.5, 18.6 – < 18.6.3, 18.7 – < 18.7.1 | 18.5.5 |
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
- WID-SEC-2026-0037 GitLab CE und EE: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 11, 2026
- NCSC-2026-0003 Kwetsbaarheden verholpen in GitLab NCSC-NL (Netherlands) · Jan 9, 2026
References
- GitLab Issue #570528 issue-tracking permissions-required
- HackerOne Bug Bounty Report #3284689 technical-description exploit permissions-required
- https://about.gitlab.com/releases/2026/01/07/patch-release-gitlab-18-7-1-released/