High severity · published Jan 21, 2025
CVE-2025-23369
Improper Verification of Cryptographic Signature in GitHub Enterprise Server Allows Signature Spoofing by Improper Validation
8.8
CVSS
1.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ES
Enterprise Server · GitHub
3.12.0 through 3.12.13; 3.13.0 through 3.13.9; 3.14.0 through 3.14.6; 3.15.0 through 3.15.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-23369
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-23369
Release Notes
https://docs.github.com/en/enterprise-server@3.12/admin/release-notes#3.12.14
Release Notes
https://docs.github.com/en/enterprise-server@3.13/admin/release-notes#3.13.10
Release Notes
https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.7
Release Notes
https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.2
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