CVE-2025-14046
Severity CVSS v4.0:
HIGH
Type:
CWE-79
Cross-Site Scripting (XSS)
Publication date:
11/12/2025
Last modified:
12/12/2025
Description
An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed user-supplied HTML to inject DOM elements with IDs that collided with server-initialized data islands. These collisions could overwrite or shadow critical application state objects used by certain Project views, leading to unintended server-side POST requests or other unauthorized backend interactions. Successful exploitation requires an attacker to have access to the target GitHub Enterprise Server instance and to entice a privileged user to view crafted malicious content that includes conflicting HTML elements. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18.3, 3.17.9, 3.16.12, 3.15.16, and 3.14.21.
Impact
Base Score 4.0
8.60
Severity 4.0
HIGH
References to Advisories, Solutions, and Tools
- https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.21
- https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.16
- https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.12
- https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.9
- https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.3