CVE-2023-6803

Name: CVE-2023-6803
Creator: NVD / NIST
Published: 2023-12-21T21:15:14.8+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4/10EPSS 0.17%

Last modified Jun 17, 2026

CVE-2023-6803 is a medium-severity vulnerability rated 4/10 on the CVSS scale. 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. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

4/10

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

EPSS Probability

0.17%

6.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Github	Enterprise Server	>= 3.8.0, < 3.8.12
Github	Enterprise Server	>= 3.9.0, < 3.9.7
Github	Enterprise Server	>= 3.10.0, < 3.10.4
Github	Enterprise Server	3.11.0

References

https://docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4Release Notes
https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.1Release Notes
https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.12Release Notes
https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.7Release Notes
https://docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4Release Notes
https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.1Release Notes
https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.12Release Notes
https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.7Release Notes

Timeline

Published: Dec 21, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-6803?

How severe is CVE-2023-6803?

CVE-2023-6803 has a CVSS score of 4/10 (MEDIUM severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.

How do I fix CVE-2023-6803?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-6803?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST