Vulnerability in Github Enterprise Server
CVE-2026-5512
An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their numeric ID. The mobile upload policy API endpoint did not per…
EPSS: 0.000 (11.7th 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 — versions 3.20.0
Weakness classification (CWE)
References
- product-cna@github.com (Release Notes, Vendor Advisory)
- product-cna@github.com (Release Notes, Vendor Advisory)
- product-cna@github.com (Release Notes, Vendor Advisory)
- product-cna@github.com (Release Notes, Vendor Advisory)
- product-cna@github.com (Release Notes, Vendor Advisory)
- product-cna@github.com (Release Notes, Vendor Advisory)
- product-cna@github.com (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-5512?
- CVE-2026-5512 is a medium-severity vulnerability in Github Enterprise Server, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 4.3/10. Published 2026-04-21.
- How severe is CVE-2026-5512?
- Medium severity. CVSS v3 base score is 4.3 out of 10.