CVE-2023-6803

Race Condition allows Unauthorized Outside Collaborator

5.8 Medium

A race condition in GitHub Enterprise Server allows an outside collaborator to be added while a repository is being transferred. This vulnerability affected all versions of GitHub Enterprise Server since 3.8 and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: High
Privileges needed: High
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: Low

Exploit likelihood

0.17%Up 0.1 points since Dec 22, 2023

What each source reports

CVE List Score used 5.8

Race Condition allows Unauthorized Outside Collaborator

Record: CVE-2023-6803
CVSS 3.1: 5.8 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L
Weakness: CWE-367
Updated: 2026-11-02

EUVDEUVD-2023-59014 5.8

Record: EUVD-2023-59014
CVSS 3.1: 5.8 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L
Updated: 2026-11-03

GitHub AdvisoriesGHSA-g77w-7799-j8hq 5.8

A race condition in GitHub Enterprise Server allows an outside collaborator to be added while a...

Record: GHSA-g77w-7799-j8hq
CVSS 3.1: 5.8 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L
Weakness: CWE-367
Updated: 2026-11-02

NVD 5.8

Record: CVE-2023-6803
CVSS 3.1: 5.8 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L
CVSS 3.1: 4.0 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N
Weakness: CWE-367
Updated: 2026-11-02

Affected products

github enterprise server

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-6803 is a medium vulnerability (CVSS 5.8) in Github Enterprise Server, published December 21, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.17%, the 5th percentile. No source names a fixed version.