CVE-2026-0752: GitLab

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that under certain circumstances, could have allowed an unauthenticated user to inject arbitrary scripts into the Mermaid sandbox UI.

Affected products

• GitLab GitLab: from 16.2.0, before 18.7.5 (fixed in 18.7.5); from 18.8.0, before 18.8.5 (fixed in 18.8.5); version 18.9.0 only

Published 2026-02-25. Last modified 2026-06-17.