Improper Access Control in GitHub Enterprise Server
CVE-2025-8447

7HIGH

Key Information:

Vendor

Github
Status
Enterprise Server
Vendor
CVE Published:
26 August 2025

What is CVE-2025-8447?

An improper access control vulnerability discovered in GitHub Enterprise Server allows unauthorized users with access to any repository to retrieve limited code content from another repository. By leveraging the compare/diff functionality, an attacker must know the name of a private repository along with specific branches, tags, or commit SHAs to exploit this flaw. This security flaw impacts all versions of GitHub Enterprise Server before 3.18, which have been remedied in versions 3.14.17, 3.15.12, 3.16.8, and 3.17.5. Continuous vigilance and timely updates are crucial to safeguarding repository integrity.

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Affected Version(s)

Enterprise Server 3.14 <= 3.14.16

Enterprise Server 3.14 <= 3.14.16

Enterprise Server 3.15 <= 3.15.11

References

https://docs.github.com/en/enterprise-server@3.14/admin/r...
https://docs.github.com/en/enterprise-server@3.15/admin/r...
https://docs.github.com/en/enterprise-server@3.16/admin/r...

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

furbreeze
JSON
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