Vulnerability Details CVE-2026-84739
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.11 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary JavaScript in the context of another user's browser session due to improper sanitization of path components in the merge request diff viewer.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 27.8%
CVSS Severity
CVSS v3 Score 8.7