CVE-2026-2973
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.7 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 execute arbitrary JavaScript in a user's browser due to improper sanitization of entity-encoded content in Mermaid diagrams.
- Score
- CVSS 3.1 5.4 Medium
- Status
- Analyzed - cve@gitlab.com
- Published
- 2026-03-25
- Last modified
- 2026-03-26
- Weaknesses
- CWE-79
Affected products
References
- https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/
- https://gitlab.com/gitlab-org/gitlab/-/work_items/591049
- https://hackerone.com/reports/3566802
