CVE-2025-23369

Improper Verification of Cryptographic Signature in GitHub Enterprise Server Allows Signature Spoofing by Improper Validation

7.6 HighPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: Low

Exploit likelihood

1.61%Up 1.6 points since Jan 22, 2025

What each source reports

CVE List Score used 7.6

Improper Verification of Cryptographic Signature in GitHub Enterprise Server Allows Signature Spoofing by Improper Validation

Record: CVE-2025-23369
CVSS 4.0: 7.6 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Weakness: CWE-347
Updated: 2026-11-02

EUVDEUVD-2025-3159 7.6

Record: EUVD-2025-3159
CVSS 4.0: 7.6 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-jqqp-8w3h-pwg3 6.1

An improper verification of cryptographic signature vulnerability was identified in GitHub...

Record: GHSA-jqqp-8w3h-pwg3
CVSS 4.0: 6.1 MediumCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:L/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 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-347
Updated: 2026-11-02

NVD 7.6

Record: CVE-2025-23369
CVSS 4.0: 7.6 HighCVSS: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 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-347
Updated: 2026-11-02

Affected products

github enterprise server

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	Arian91/CVE-2025-23369_SAML_bypass	2025-02-09
PoC in GitHub	hakivvi/CVE-2025-23369	2025-02-08

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-23369 is a high vulnerability (CVSS 7.6) in Github Enterprise Server, published January 21, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.61%, the 76th percentile. No source names a fixed version.