CVE-2026-19118Race condition vulnerability was identified in GitHub Enterprise Server that allowed remote code execution

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.20 release-notesRelease NotesVendor Advisory
• https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.14 release-notesRelease NotesVendor Advisory
• https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.11 release-notesRelease NotesVendor Advisory
• https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.7 release-notesRelease NotesVendor Advisory
• https://docs.github.com/en/enterprise-server@3.21/admin/release-notes#3.21.5 release-notesRelease NotesVendor Advisory