CVE-2025-14046

Dec. 19, 2025, 7:47 p.m.

8.6
High

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.

Product(s) Impacted

Vendor Product Versions
Github
  • Enterprise Server
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a github enterprise_server / / / / / / / /
a github enterprise_server / / / / / / / /
a github enterprise_server / / / / / / / /
a github enterprise_server / / / / / / / /
a github enterprise_server / / / / / / / /

References

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

Tags

product-cna@github.com
2025-12-11
CVE-2025-14046

CVSS Score

8.6 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Attack Requirements: NONE
  • Privileges Required: NONE
  • User Interaction: PASSIVE
  • Scope:
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: NONE
  • Exploit Maturity: NOT_DEFINED

    • CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

    View Vector String

Timeline

Published: Dec. 11, 2025, 6:16 p.m.
Last Modified: Dec. 19, 2025, 7:47 p.m.

Status : Analyzed

CVE has had analysis completed and all data associations made.

More info

Source

product-cna@github.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.