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

> CVE-2026-19118: Race condition vulnerability was identified in GitHub Enterprise Server that allowed remote code execution. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-19118
Last updated: 2026-09-08T13:08:54Z

- Published: 2026-09-01 21:55 UTC · Updated: 2026-09-08 13:08 UTC · Assigner: GitHub\_P
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 0.91%, 60th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-367

## 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.

## Affected vendors and products

- GitHub: Enterprise Server

## Tracked companies

- [GitHub](https://rewindex.com/company/github.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-19118)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-19118)
- [https://docs.github.com/en/enterprise-server@3.17/admin/release-notes\#3.17.20](https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.20)
- [https://docs.github.com/en/enterprise-server@3.18/admin/release-notes\#3.18.14](https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.14)
- [https://docs.github.com/en/enterprise-server@3.19/admin/release-notes\#3.19.11](https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.11)
- [https://docs.github.com/en/enterprise-server@3.20/admin/release-notes\#3.20.7](https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.7)
- [https://docs.github.com/en/enterprise-server@3.21/admin/release-notes\#3.21.5](https://docs.github.com/en/enterprise-server@3.21/admin/release-notes#3.21.5)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-19118 · Markdown: https://rewindex.com/cve/CVE-2026-19118.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-19118 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:12:56.947Z