Vulnerability Details CVE-2026-3254
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.11 before 18.11.1 that under certain conditions could have allowed an authenticated user to load unauthorized content into another user's browser due to improper input validation in the Mermaid sandbox.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 1.5%
CVSS Severity
CVSS v3 Score 3.5
References