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Findings

Vulnerability · CVE-2025-3246

An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed cross-site scripting in GitHub Markdown that used math blocks.

Published Apr 17, 2025 · corrected/updated Apr 18, 2025 · GitHub GitHub Enterprise Server · evidence confidence high

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.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2025-3246 is a high public vulnerability record for GitHub GitHub Enterprise Server. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether GitHub GitHub Enterprise Server is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: GitHub GitHub Enterprise Server 3.16 ≤3.16.1 (3.16 ≤3.16.1). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 8.6, EPSS 30.0%. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: euvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 17, 2025 · EUVD

    Detected

    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 versi

  2. Apr 18, 2025 · EUVD

    Updated

    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 versi

Affected

  • vendor GitHub GitHub Enterprise Server 3.16 ≤3.16.13.16 ≤3.16.1

Sources

  • EUVDVulnerability recordEUVD-2025-11795

    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 wi

    euvd.enisa.europa.eu

References