CVE-2025-3246

Markdown math block sanitization bypass allows privilege escalation and unauthorized workflow triggers

State: Published
Severity: 8.6 High
Published: Apr 17, 2025
Updated: Apr 18, 2025
Reserved: Apr 3, 2025

Description

An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed cross-site scripting in GitHub Markdown that used `$$..$$` math blocks. Exploitation required access to the target GitHub Enterprise Server instance and privileged user interaction with the malicious elements. This vulnerability affected version 3.16.1 of GitHub Enterprise Server and was fixed in version 3.16.2. This vulnerability was reported via the GitHub Bug Bounty program.

Scores

CVSS	Score	Vector	Source
4.0	8.6 High	CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/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
GitHub Enterprise ServerGitHub	3.16 through 3.16.1Affectedfrom 3.16.2Not affected

References

https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.2

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