CVE-2023-6803: GitHub Enterprise Server

Medium severity, CVSS 4.0. EPSS: 0.2% chance of exploitation in the next 30 days.

A race condition in GitHub Enterprise Server allows an outside collaborator to be added while a repository is being transferred. This vulnerability affected all versions of GitHub Enterprise Server since 3.8 and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1.

Affected products

• GitHub Enterprise Server: from 3.8.0, before 3.8.12 (fixed in 3.8.12); from 3.9.0, before 3.9.7 (fixed in 3.9.7); from 3.10.0, before 3.10.4 (fixed in 3.10.4); version 3.11.0 only

Published 2023-12-21. Last modified 2026-06-17.