Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.6 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user with developer-role permissions to commit changes to a project after being removed as a member, due to improper authorization checks on merge request collaboration settings.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 10.6 – < 19.0.5, 19.1 – < 19.1.3, 19.2 – < 19.2.1 | 19.0.5 |
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.
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | gitlab-runner-18.11 +5 | 18.11.4-r2 | — |
| Wolfi rolling | gitlab-runner-19.0 +5 | 19.0.3-r0 | — |
| Wolfi rolling | gitlab-runner-19.1 +5 | 19.1.2-r1 | — |
Advisories 2
- NCSC-2026-0270 Kwetsbaarheden verholpen in GitLab door GitLab Inc. NCSC-NL (Netherlands) · Jul 30, 2026
- WID-SEC-2026-2586 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 29, 2026
References
- HackerOne Bug Bounty Report #3460445 technical-description exploit permissions-required
- https://gitlab.com/gitlab-org/gitlab/-/work_items/583889
- https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-1-released/