Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Github | Enterprise Server | < 3.17.20 |
Related Weaknesses (CWE)
References
- https://docs.github.com/en/[email protected]/admin/release-notes#3.17.20Release NotesVendor Advisory
- https://docs.github.com/en/[email protected]/admin/release-notes#3.18.14Release NotesVendor Advisory
- https://docs.github.com/en/[email protected]/admin/release-notes#3.19.11Release NotesVendor Advisory
- https://docs.github.com/en/[email protected]/admin/release-notes#3.20.7Release NotesVendor Advisory
- https://docs.github.com/en/[email protected]/admin/release-notes#3.21.5Release NotesVendor Advisory
FAQ
What is CVE-2026-19118?
CVE-2026-19118 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2026-19118?
CVE-2026-19118 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-19118?
Check the references section above for vendor advisories and patch information. Affected products include: Github Enterprise Server.