CVE-2025-13744

Improper Neutralization of Input During Web Page Generation vulnerability was identified in GitHub Enterprise Server that allowed rendering of malicious HTML

State: Published
Severity: 8.4 High
Published: Jan 6, 2026
Updated: Jan 6, 2026
Reserved: Nov 26, 2025

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Description

An Improper Neutralization of Input During Web Page Generation vulnerability was identified in GitHub Enterprise Server that allowed attacker controlled HTML to be rendered by the Filter component (search) across GitHub that could be used to exfiltrate sensitive information. An attacker would require permissions to create or modify the names of milestones, issues, pull requests, or similar entities that are rendered in the vulnerable filter/search components. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.20 and was fixed in versions 3.19.1, and 3.18.2, 3.17.8, 3.16.11, 3.15.15, and 3.14.20. This vulnerability was reported via the GitHub Bug Bounty program.

Scores

CVSS	Score	Vector	Source
4.0	8.4 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:H/SI:H/SA:N	GitHub_P

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Affected Products

Product	Versions
Enterprise ServerGitHub	3.14.0 through 3.14.19Affectedfrom 3.14.20Not affected 3.15.0 through 3.15.14Affectedfrom 3.15.15Not affected 3.16.0 through 3.16.10Affectedfrom 3.16.11Not affected 3.17.0 through 3.17.7Affectedfrom 3.17.8Not affected 3.18.0 through 3.18.1Affectedfrom 3.18.2Not affected 3.19 through 3.19.0Affectedfrom 3.19.1Not affected

References

https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.20release-notes
https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.15release-notes
https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.11release-notes
https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.8release-notes
https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.2release-notes
https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.1release-notes

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