A path traversal vulnerability was identified in GitHub Enterprise Server that allowed an attacker to gain unauthorized read permission to files by deploying arbitrary symbolic links to a GitHub Pages site with a specially crafted artifact tarball. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12 and was fixed in versions 3.8.15, 3.9.10, 3.10.7, 3.11.5. This vulnerability was reported via the GitHub Bug Bounty program.
An unsafe reflection vulnerability was identified in GitHub Enterprise Server that could lead to reflection injection. This vulnerability could lead to the execution of user-controlled methods and remote code execution. To exploit this bug, an actor would need to be logged into an account on the GHES instance with the organization owner role. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12 and was fixed in versions 3.8.13, 3.9.8, 3.10.5, and 3.11.3. This vulnerability was reported via the GitHub Bug Bounty program.
An attacker with access to a Management Console user account with the editor role could escalate privileges through a command injection vulnerability in the Management Console. This vulnerability affected all versions of GitHub Enterprise Server and was fixed in versions 3.11.3, 3.10.5, 3.9.8, and 3.8.13 This vulnerability was reported via the GitHub Bug Bounty program.