Improper Encoding or Escaping of Output in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2025-8405

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Main Vulnerability Database Vulnerabilities #VU119825

Improper Encoding or Escaping of Output in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2025-8405

Published: December 11, 2025


Vulnerability identifier: #VU119825
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:U/U:Green
CVE-ID: CVE-2025-8405
CWE-ID: CWE-116
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: GitLab, Inc
Affected software:
GitLab Enterprise Edition
Gitlab Community Edition

Detailed vulnerability description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper encoding in vulnerability reports. A remote user can inject malicious HTML into vulnerability code flow displays and perform unauthorized actions on behalf of other users.


How to mitigate CVE-2025-8405

Install updates from vendor's website.

Sources