Auth bypass in Github Enterprise Server
CVE-2025-6981
An incorrect authorization vulnerability allowed unauthorized read access to the contents of internal repositories for contractor accounts when the Contractors API feature was enabled. The Contractors API is a rarely-enabled feature in private preview. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18 and was fixed in versions 3.14.15, 3.15.10, 3.16.6 and 3.17.3
Vulnerability class: Broken Access Control
EPSS: 0.003 (16.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Github Enterprise Server — versions 3.14.0, 3.15.0, 3.16.0
- Github Enterprise_server
Weakness classification (CWE)
Public proof-of-concept exploits
References
- product-cna@github.com (release-notes, Release Notes)
- product-cna@github.com (release-notes, Release Notes)
- product-cna@github.com (release-notes, Release Notes)
- product-cna@github.com (release-notes, Release Notes)
Frequently asked questions
- What is CVE-2025-6981?
- CVE-2025-6981 is a medium-severity vulnerability in Github Enterprise Server, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2025-07-15.
- How severe is CVE-2025-6981?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2025-6981 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.