CVE-2023-6746 Sensitive Information in Log File in GitHub Enterprise Server

High 8.1 Published 21 Dec 2023 Updated 23 Apr 2025

Attackers with log access can view sensitive data, enabling man-in-the-middle attacks via phishing; GitHub Enterprise Server administrators must upgrade.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-6746?

CVE-2023-6746 is a high-severity vulnerability in Github Enterprise Server, published on 21 Dec 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

An insertion of sensitive information into log file vulnerability was identified in the log files for a GitHub Enterprise Server back-end service that could permit an `adversary in the middle attack` when combined with other phishing techniques. To exploit this, an attacker would need access to the log files for the GitHub Enterprise Server appliance, a backup archive created with GitHub Enterprise Server Backup Utilities, or a service which received streamed logs. This vulnerability affected all versions of GitHub Enterprise Server since 3.7 and was fixed in version 3.7.19, 3.8.12, 3.9.7, 3.10.4, and 3.11.1.

Weakness: CWE-532

Which versions are affected by CVE-2023-6746?

It affects 1 product.

Products include Github Enterprise Server.

How do I fix CVE-2023-6746?

No fix has been published for CVE-2023-6746 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-6746 being exploited?

There is no known exploitation of CVE-2023-6746 in the wild and no public exploit code.

All Github Enterprise Server vulnerabilities

Sources

Also known as GHSA-fc6j-9f2x-v9w8.