How severe is CVE-2025-3246?

CVE-2025-3246 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2025-3246 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-3246?

CVE-2025-3246 affects Github Enterprise Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3246?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-3246 have an EU (EUVD) identifier?

Yes. CVE-2025-3246 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11795.

When was CVE-2025-3246 published?

CVE-2025-3246 was published on 2025-04-17 and last updated on 2026-06-17.

CVE-2025-3246

CVE-2025-3246 is a high-severity vulnerability in Github Enterprise Server with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 7.6)
CVSS v4: 8.6
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-11795
Weakness: CWE-79
Affected product: Github Enterprise Server
Published: 2025-04-17
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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. 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.
How severe is CVE-2025-3246?: CVE-2025-3246 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2025-3246 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-3246?: CVE-2025-3246 affects Github Enterprise Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3246?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-3246 have an EU (EUVD) identifier?: Yes. CVE-2025-3246 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11795.
When was CVE-2025-3246 published?: CVE-2025-3246 was published on 2025-04-17 and last updated on 2026-06-17.

References

https://docs.github.com/en/[email protected]/admin/release-notes#3.16.2

Affected products (1)

cpe:2.3:a:github:enterprise_server:3.16.1:*:*:*:*:*:*:*

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