CVE-2020-13262: GitLab

Medium severity, CVSS 6.1. EPSS: 0.9% chance of exploitation in the next 30 days.

Client-Side code injection through Mermaid markup in GitLab CE/EE 12.9 and later through 13.0.1 allows a specially crafted Mermaid payload to PUT requests on behalf of other users via clicking on a link

Affected products

• GitLab GitLab: from 12.9.0, before 12.9.8 (fixed in 12.9.8); from 12.10.0, before 12.10.7 (fixed in 12.10.7); version 13.0.0 only

Published 2020-06-19. Last modified 2026-06-17.