Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an unauthenticated user to steal tokens and access private repositories by abusing incomplete validation in the Web IDE.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 18.2 – < 18.6.6, 18.7 – < 18.7.4, 18.8 – < 18.8.4 | 18.6.6 |
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 2
- NCSC-2026-0062 Kwetsbaarheden verholpen in GitLab CE/EE NCSC-NL (Netherlands) · Feb 11, 2026
- WID-SEC-2026-0380 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 10, 2026
References
- GitLab Issue #555440 issue-tracking permissions-required
- HackerOne Bug Bounty Report #3234976 technical-description exploit permissions-required
- https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/