Description
GitLab has remediated an issue in GitLab EE affecting all versions from 15.4 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to add email addresses to targeted user accounts due to improper sanitization of HTML content.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GitLab | GitLab | 15.4 – < 18.8.7, 18.9 – < 18.9.3, 18.10 – < 18.10.1 | 18.8.7 |
Advisories 2
- NCSC-2026-0103 Kwetsbaarheden verholpen in GitLab NCSC-NL (Netherlands) · Mar 26, 2026
- WID-SEC-2026-0847 GitLab: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 25, 2026
References
- HackerOne Bug Bounty Report #3564600 technical-description exploit permissions-required
- https://gitlab.com/gitlab-org/gitlab/-/work_items/591065
- https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/