Cross-site scripting in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2026-13320
Published: July 8, 2026
Vulnerability identifier: #VU137124
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-13320
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GitLab, Inc
Affected software:
GitLab Enterprise Edition
Gitlab Community Edition
GitLab Enterprise Edition
Gitlab Community Edition
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary scripts in another user's browser session.
The vulnerability exists due to improper sanitization of user-supplied input in wiki markup rendering when rendering user-supplied wiki content. A remote privileged user can inject specially crafted markup to execute arbitrary scripts in another user's browser session.
User interaction is required for the victim to view the rendered content.
How to mitigate CVE-2026-13320
Install security update from vendor's website.