CVE-2025-6981: enterprise server Auth Bypass (CVSS 4.3)

Description

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

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
github	enterprise_server	< 3.14.5
github	enterprise_server	3.15.0 — 3.15.10
github	enterprise_server	3.16.0 — 3.16.6
github	enterprise_server	3.17.0 — 3.17.3

References

Other References

https://docs.github.com/en/[email protected]/admin/release-notes#3.14.15 https://docs.github.com/en/[email protected]/admin/release-notes#3.15.10 https://docs.github.com/en/[email protected]/admin/release-notes#3.16.6 https://docs.github.com/en/[email protected]/admin/release-notes#3.17.3

Frequently Asked Questions

What is 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 It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-6981? +

CVE-2025-6981 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-6981? +

CVE-2025-6981 affects products from github, specifically: enterprise_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-6981? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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