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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.

PUBLISHED Reserved 2025-11-26 | Published 2026-01-06 | Updated 2026-01-06 | Assigner GitHub_P




HIGH: 8.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:H/SI:H/SA:N

Problem types

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

Product status

Default status
affected

3.14.0 (semver)
affected

3.15.0 (semver)
affected

3.16.0 (semver)
affected

3.17.0 (semver)
affected

3.18.0 (semver)
affected

3.19 (semver)
affected

Credits

Roshan Kudave finder

Johan Carlsson finder

References

docs.github.com/...nterprise-server@3.14/admin/release-notes release-notes

docs.github.com/...nterprise-server@3.15/admin/release-notes release-notes

docs.github.com/...nterprise-server@3.16/admin/release-notes release-notes

docs.github.com/...nterprise-server@3.17/admin/release-notes release-notes

docs.github.com/...nterprise-server@3.18/admin/release-notes release-notes

docs.github.com/...nterprise-server@3.19/admin/release-notes release-notes

cve.org (CVE-2025-13744)

nvd.nist.gov (CVE-2025-13744)

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