VULNERABILITY INTELLIGENCE
CVE-2026-19118
CVSS score7.5 HIGH
EPSS probability0.91%
CISA KEVNot currently listed
Published2026-09-01
Last modified2026-09-08
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
A time-of-check time-of-use race condition vulnerability was identified in GitHub Enterprise Server that allowed remote code execution. Exploitation required an authenticated user with write access to a repository and precise timing of concurrent upload requests. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.17.20, 3.18.14, 3.19.11, 3.20.7, and 3.21.5. This vulnerability was reported via the GitHub Bug Bounty program.
Weakness classification
- product-cna@github.com: CWE-367
Primary 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