CVE-2025-23369
Improper Verification of Cryptographic Signature in GitHub Enterprise Server Allows Signature Spoofing by Improper Validation
HIGH 7.6EPSS 1.6%
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
- GitHub · Enterprise Server
- CVSS v4.0 GITHUB
- 7.6 HIGH
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 NVD
- 8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 1.62% chance of exploitation in the next 30 days, 76th percentile
- Published
- 2025-01-21
- Updated
- 2025-02-12
Proof-of-concept exploits (2)
- Arian91/CVE-2025-23369_SAML_bypass0★ · 2025-02-09
- hakivvi/CVE-2025-2336938★ · 2025-02-08
Security advisories
- 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@3.14/admin/release-notes#3.14.7
- https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.2