CVE-2023-23761

Improper authentication vulnerability in GitHub Enterprise Server leading to modification of secret gists

7.7 High

An improper authentication vulnerability was identified in GitHub Enterprise Server that allowed an unauthorized actor to modify other users' secret gists by authenticating through an SSH certificate authority. To do so, a user had to know the secret gist's URL. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.9 and was fixed in versions 3.4.18, 3.5.15, 3.6.11, 3.7.8, and 3.8.1. This vulnerability was reported via the GitHub Bug Bounty program.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: Low
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.46%Up 0.4 points since Apr 8, 2023

What each source reports

CVE List Score used 7.7

Improper authentication vulnerability in GitHub Enterprise Server leading to modification of secret gists

Record: CVE-2023-23761
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Weakness: CWE-287
Updated: 2026-11-02

EUVDEUVD-2023-27847 7.7

Record: EUVD-2023-27847
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-q7wq-398w-6957 5.3

An improper authentication vulnerability was identified in GitHub Enterprise Server that allowed...

An improper authentication vulnerability was identified in GitHub Enterprise Server that allowed an unauthorized actor to modify other users' secret gists by authenticating through an SSH certificate authority. To do so, a user had to know the secret gist’s URL. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.9 and was fixed in versions 3.4.18, 3.5.15, 3.6.11, 3.7.8, and 3.8.1. This vulnerability was reported via the GitHub Bug Bounty program.

Record: GHSA-q7wq-398w-6957
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-287
Updated: 2026-11-02

NVD 7.7

Record: CVE-2023-23761
CVSS 3.1: 7.7 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-287
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-2023-23761 is a high vulnerability (CVSS 7.7) in Github Enterprise Server, published April 7, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. No source names a fixed version.