What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-12-21 · updated 2026-06-17
• Weakness: CWE-532

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.

Affected products

• GitHub Enterprise Server: from 3.7.0 before 3.7.19; from 3.8.0 before 3.8.12; from 3.9.0 before 3.9.7; from 3.10.0 before 3.10.4; 3.11.0 — fixed in 3.10.4, 3.7.19, 3.8.12, 3.9.7

How to fix

Upgrade to a fixed version: GitHub Enterprise Server 3.10.4, 3.7.19, 3.8.12, 3.9.7. Check the vendor advisory for mitigations.

References

• https://docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4
• https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.1
• https://docs.github.com/en/enterprise-server@3.7/admin/release-notes#3.7.19
• https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.12
• https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.7
• https://docs.github.com/en/enterprise-server@3.10/admin/release-notes#3.10.4
• https://docs.github.com/en/enterprise-server@3.11/admin/release-notes#3.11.1
• https://docs.github.com/en/enterprise-server@3.7/admin/release-notes#3.7.19
• https://docs.github.com/en/enterprise-server@3.8/admin/release-notes#3.8.12
• https://docs.github.com/en/enterprise-server@3.9/admin/release-notes#3.9.7

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