Auth bypass in GitHub Enterprise Server
CVE-2023-23763
An authorization/sensitive information disclosure vulnerability was identified in GitHub Enterprise Server that allowed a fork to retain read access to an upstream repository after its visibility was changed to private. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.10.0 and was fixed in versions 3.9.4, 3.8.9, 3.7.16 and 3.6.18. This vulnerability was reported via the GitHub Bug Bounty program.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (49.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.001
Affected products
- GitHub Enterprise Server — versions 3.6.0, 3.7.0, 3.8.0
- GitHub Enterprise Server
Weakness classification (CWE)
References
- docs.github.com/en/enterprise-server@3.6/admin/release-notes (Release Notes)
- docs.github.com/en/enterprise-server@3.7/admin/release-notes (Release Notes)
- docs.github.com/en/enterprise-server@3.8/admin/release-notes (Release Notes)
- docs.github.com/en/enterprise-server@3.9/admin/release-notes (Release Notes)
Frequently asked questions
- What is CVE-2023-23763?
- CVE-2023-23763 is a medium-severity vulnerability in GitHub Enterprise Server, classified under Information Disclosure. CVSS score: 5.3/10. Published 2023-09-01.
- How severe is CVE-2023-23763?
- Medium severity. CVSS v3 base score is 5.3 out of 10.