Auth bypass in Github Enterprise Server
CVE-2026-3307
An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed an attacker with admin access on one repository to modify the secret scanning push protection delegated bypass reviewer list on another repositor…
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.001 (22.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/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-2026-3307?
- CVE-2026-3307 is a low-severity vulnerability in Github Enterprise Server, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 2.7/10. Published 2026-04-21.
- How severe is CVE-2026-3307?
- Low severity. CVSS v3 base score is 2.7 out of 10.