SB2025052215 - Multiple vulnerabilities in GitHub Enterprise Server

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Missing authorization (CVE-ID: CVE-2025-3124)

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to missing authorization checks. A remote user can see private repository names in the GitHub Advanced Security Overview when filtering with only "archived:".

2) Exposed dangerous method or function (CVE-ID: CVE-2025-3509)

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists within the pre-receive hook functionality, which becomes available during a hot patch upgrade. A remote user with site administrator permissions or a user with privileges to modify repositories containing pre-receive hooks can execute arbitrary code on the system.

3) Cross-site scripting (CVE-ID: CVE-2025-3246)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote user can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install update from vendor's website.

References

• https://docs.github.com/en/enterprise-server@3.13/admin/release-notes#3.13.14
• https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.11
• https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.6
• https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.2