# CVE-2025-23369: Improper Verification of Cryptographic Signature in GitHub Enterprise Server Allows Signature Spoofing by Improper Validation

> CVE-2025-23369: Improper Verification of Cryptographic Signature in GitHub Enterprise Server Allows Signature Spoofing by Improper Validation. CVSS 8.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-23369
Last updated: 2026-06-17T08:53:51Z

- Published: 2025-01-21 18:46 UTC · Updated: 2026-06-17 08:53 UTC · Assigner: GitHub\_P
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 1.6%, 76th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-347

## Description

An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users.  Instances not utilizing SAML single sign-on or where the attacker is not already an existing user were not impacted. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12.14, 3.13.10, 3.14.7, 3.15.2, and 3.16.0. This vulnerability was reported via the GitHub Bug Bounty program.

## Affected vendors and products

- GitHub: Enterprise Server

## Tracked companies

- [GitHub](https://rewindex.com/company/github.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-23369)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-23369)
- [https://docs.github.com/en/enterprise-server@3.12/admin/release-notes\#3.12.14](https://docs.github.com/en/enterprise-server@3.12/admin/release-notes#3.12.14)
- [https://docs.github.com/en/enterprise-server@3.13/admin/release-notes\#3.13.10](https://docs.github.com/en/enterprise-server@3.13/admin/release-notes#3.13.10)
- [https://docs.github.com/en/enterprise-server@3.14/admin/release-notes\#3.14.7](https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.7)
- [https://docs.github.com/en/enterprise-server@3.15/admin/release-notes\#3.15.2](https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.2)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-23369 · Markdown: https://rewindex.com/cve/CVE-2025-23369.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-23369 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:12:27.031Z