CVE-2026-19118
Race condition vulnerability was identified in GitHub Enterprise Server that allowed remote code execution
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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, 3.21.5, and 3.22.0. This vulnerability was reported via the GitHub Bug Bounty program.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://docs.github.com/en/[email protected]/admin/release-notes#3.17.20
- https://docs.github.com/en/[email protected]/admin/release-notes#3.18.14
- https://docs.github.com/en/[email protected]/admin/release-notes#3.19.11
- https://docs.github.com/en/[email protected]/admin/release-notes#3.20.7
- https://docs.github.com/en/[email protected]/admin/release-notes#3.21.5
References (5)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
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