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Vulnerability record · CVE-2023-6690 · published 21 December 2023

CVE-2023-6690: Github enterprise server toctou race condition vulnerability

Github · Enterprise Server

A race condition in GitHub Enterprise Server allowed an existing admin to maintain permissions on transferred repositories by making a GraphQL mutation to alter repository permissions during the transfer. This vulnerability affected GitHub Enterprise Server version 3.8.0 and above and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1.

2.0 CVSS 3.1 Low EPSS 0.33% · top 76.8% CWE-367 · TOCTOU race condition
2.0CVSS 3.1 base score
0.33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

A race condition in GitHub Enterprise Server allowed an existing admin to maintain permissions on transferred repositories by making a GraphQL mutation to alter repository permissions during the transfer. This vulnerability affected GitHub Enterprise Server version 3.8.0 and above and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1.

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://docs.github.com/en/[email protected]/admin/release-notes#3.10.4 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.11.1 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.8.12 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.9.7 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.10.4 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.11.1 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.8.12 Release Notes
https://docs.github.com/en/[email protected]/admin/release-notes#3.9.7 Release Notes

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-6690), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.