What is CVE-2025-23369?

CVE-2025-23369 is a high-severity vulnerability in GitHub Enterprise Server, classified under Improper Verification of Cryptographic Signature. CVSS score: 8.8/10. Published 2025-01-21.

How severe is CVE-2025-23369?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2025-23369 known to be exploited?

6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in GitHub Enterprise Server

CVE-2025-23369

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.

EPSS: 0.016 (74.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Github Enterprise Server — versions 3.12.0, 3.13.0, 3.14.0
Github Enterprise_server

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

Public proof-of-concept exploits

References

product-cna@github.com (Release Notes)
product-cna@github.com (Release Notes)
product-cna@github.com (Release Notes)
product-cna@github.com (Release Notes)

Frequently asked questions

What is CVE-2025-23369?: CVE-2025-23369 is a high-severity vulnerability in GitHub Enterprise Server, classified under Improper Verification of Cryptographic Signature. CVSS score: 8.8/10. Published 2025-01-21.
How severe is CVE-2025-23369?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2025-23369 known to be exploited?: 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.