How severe is CVE-2023-6746?

CVE-2023-6746 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2023-6746 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6746?

CVE-2023-6746 primarily affects Github Enterprise Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-6746?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-6746 published?

CVE-2023-6746 was published on 2023-12-21 and last updated on 2026-06-17.

CVE-2023-6746

CVE-2023-6746 is a high-severity vulnerability in Github Enterprise Server with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-532.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-532
Affected product: Github Enterprise Server
Published: 2023-12-21
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-6746?: 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.
How severe is CVE-2023-6746?: CVE-2023-6746 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2023-6746 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6746?: CVE-2023-6746 primarily affects Github Enterprise Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-6746?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-6746 published?: CVE-2023-6746 was published on 2023-12-21 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
cpe:2.3:a:github:enterprise_server:3.11.0:*:*:*:*:*:*:*

More vulnerabilities in Github Enterprise Server

CVE-2026-8034 — Critical (CVSS 9.8): A server-side request forgery (SSRF) vulnerability was identified in the GitHub Enterprise Server notebook viewer that…
CVE-2024-6800 — Critical (CVSS 9.8): An XML signature wrapping vulnerability was present in GitHub Enterprise Server (GHES) when using SAML authentication…
CVE-2024-4985 — Critical (CVSS 9.8): An authentication bypass vulnerability was present in the GitHub Enterprise Server (GHES) when utilizing SAML single…
CVE-2022-23739 — Critical (CVSS 9.8): An incorrect authorization vulnerability was identified in GitHub Enterprise Server, allowing for escalation of…
CVE-2022-46255 — Critical (CVSS 9.8): An improper limitation of a pathname to a restricted directory vulnerability was identified in GitHub Enterprise Server…
CVE-2021-22869 — Critical (CVSS 9.8): An improper access control vulnerability in GitHub Enterprise Server allowed a workflow job to execute in a self-hosted…

All CVEs affecting Github Enterprise Server →

Other CWE-532 (Insertion of Sensitive Information into Log File) vulnerabilities

CVE-2022-36407 — Critical (CVSS 9.9): Insertion of Sensitive Information into Log File vulnerability in Hitachi Virtual Storage Platform, Hitachi Virtual…
CVE-2023-40029 — Critical (CVSS 9.9): Argo CD is a declarative continuous deployment for Kubernetes. Argo CD Cluster secrets might be managed declaratively…
CVE-2021-32724 — Critical (CVSS 9.9): check-spelling is a github action which provides CI spell checking. In affected versions and for a repository with the…
CVE-2026-49200 — Critical (CVSS 9.8): The acer_cgi.log file in the device firmware is accessible without authentication via the web interface. This file…
CVE-2026-22778 — Critical (CVSS 9.8): vLLM is an inference and serving engine for large language models (LLMs). From 0.8.3 to before 0.14.1, when an invalid…
CVE-2025-11008 — Critical (CVSS 9.8): The CE21 Suite plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and…

Browse all CWE-532 (Insertion of Sensitive Information into Log File) vulnerabilities →