An improper cache key vulnerability was identified in GitHub Enterprise Server that allowed an unauthorized actor to access private repository files through a public repository. To exploit this, an actor would need to already be authorized on the GitHub Enterprise Server instance, be able to create a public repository, and have a site administrator visit a specially crafted URL. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.6 and was fixed in versions 3.2.20, 3.3.15, 3.4.10, 3.5.7, 3.6.3. This vulnerability was reported via the GitHub Bug Bounty program.

An improper privilege management vulnerability was identified in GitHub Enterprise Server that allowed users with improper privileges to create or delete pages via the API. To exploit this vulnerability, an attacker would need to be added to an organization’s repo with write permissions. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.7 and was fixed in versions 3.2.20, 3.3.15, 3.4.10, 3.5.7, and 3.6.3. This vulnerability was reported via the GitHub Bug Bounty program.

A deserialization of untrusted data vulnerability was identified in GitHub Enterprise Server that could potentially lead to remote code execution on the SVNBridge. To exploit this vulnerability, an attacker would need to gain access via a server-side request forgery (SSRF) that would let an attacker control the data being deserialized. This vulnerability affected all versions of GitHub Enterprise Server prior to v3.6 and was fixed in versions 3.5.3, 3.4.6, 3.3.11, and 3.2.16. This vulnerability was reported via the GitHub Bug Bounty program.

A stored XSS vulnerability was identified in GitHub Enterprise Server that allowed the injection of arbitrary attributes. This injection was blocked by Github’s Content Security Policy (CSP). This vulnerability affected all versions of GitHub Enterprise Server prior to 3.6 and was fixed in versions 3.3.11, 3.4.6 and 3.5.3. This vulnerability was reported via the GitHub Bug Bounty program.

A path traversal vulnerability was identified in GitHub Enterprise Server management console that allowed the bypass of CSRF protections. This could potentially lead to privilege escalation. To exploit this vulnerability, an attacker would need to target a user that was actively logged into the management console. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.5 and was fixed in versions 3.1.19, 3.2.11, 3.3.6, 3.4.1. This vulnerability was reported via the GitHub Bug Bounty program.