An improper verification of cryptographic signature vulnerability was identified in GitHub Enterprise Server that allowed signature spoofing for unauthorized internal users. Instances not utilizing SAML single sign-on or where the attacker is not already an existing user were not impacted. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12.14, 3.13.10, 3.14.7, 3.15.2, and 3.16.0. This vulnerability was reported via the GitHub Bug Bounty program.

A Code Injection vulnerability was identified in GitHub Enterprise Server that allowed attackers to inject malicious code into the query selector via the identity property in the message handling function. This enabled the exfiltration of sensitive data by manipulating the DOM, including authentication tokens. To execute the attack, the victim must be logged into GitHub and interact with the attacker controlled malicious webpage containing the hidden iframe. This vulnerability occurs due to an improper sequence of validation, where the origin check occurs after accepting the user-controlled identity property. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.11.16, 3.12.10, 3.13.5, 3.14.2, and 3.15.0. This vulnerability was reported via the GitHub Bug Bounty program.

A missing authorization vulnerability was identified in GitHub Enterprise Server that allowed a user to see the names of private repositories that they wouldn't otherwise have access to in the Security Overview in GitHub Advanced Security. The Security Overview was required to be filtered only using the archived: filter and all other access controls were functioning normally. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.17 and was fixed in versions 3.13.14, 3.14.11, 3.15.6, and 3.16.2.

An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed cross-site scripting in GitHub Markdown that used $$..$$ math blocks. Exploitation required access to the target GitHub Enterprise Server instance and privileged user interaction with the malicious elements. This vulnerability affected version 3.16.1 of GitHub Enterprise Server and was fixed in version 3.16.2. This vulnerability was reported via the GitHub Bug Bounty program.

A command injection vulnerability was identified in GitHub Enterprise Server that allowed an attacker with an editor role in the Management Console to gain admin SSH access to the appliance when configuring GeoJSON settings. Exploitation of this vulnerability required access to the GitHub Enterprise Server instance and access to the Management Console with the editor role. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.13 and was fixed in versions 3.8.17, 3.9.12, 3.10.9, 3.11.7, and 3.12.1. This vulnerability was reported via the GitHub Bug Bounty program.

An attacker with an Administrator role in GitHub Enterprise Server could gain SSH root access via remote code execution. This vulnerability affected GitHub Enterprise Server version 3.8.0 and above and was fixed in version 3.8.17, 3.9.12, 3.10.9, 3.11.7 and 3.12.1. This vulnerability was reported via the GitHub Bug Bounty program.

An Improper Privilege Management vulnerability was identified in GitHub Enterprise Server that allowed an attacker to use a deploy key pertaining to an organization to bypass an organization ruleset. An attacker would require access to a valid deploy key for a repository in the organization as well as repository administrator access. This vulnerability affected versions of GitHub Enterprise Server 3.11 to 3.12 and was fixed in versions 3.11.8 and 3.12.2. This vulnerability was reported via the GitHub Bug Bounty program.

A command injection vulnerability was identified in GitHub Enterprise Server that allowed an attacker with an editor role in the Management Console to gain admin SSH access to the instance when configuring the chat integration. Exploitation of this vulnerability required access to the GitHub Enterprise Server instance and access to the Management Console with the editor role. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12 and was fixed in versions 3.12.2, 3.11.8, 3.10.10, and 3.9.13. This vulnerability was reported via the GitHub Bug Bounty program.

A server side request forgery vulnerability was identified in GitHub Enterprise Server that allowed an attacker with an editor role in the Management Console to gain admin access to the appliance when configuring the Artifacts & Logs and Migrations Storage. Exploitation of this vulnerability required access to the GitHub Enterprise Server instance and access to the Management Console with the editor role. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12 and was fixed in versions 3.12.2, 3.11.8, 3.10.10, and 3.9.13. This vulnerability was reported via the GitHub Bug Bounty program.

A race condition in GitHub Enterprise Server allowed an existing admin to maintain permissions on a detached repository by making a GraphQL mutation to alter repository permissions while the repository is detached. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.13 and was fixed in versions 3.9.13, 3.10.10, 3.11.8 and 3.12.1. This vulnerability was reported via the GitHub Bug Bounty program.

A Cross Site Request Forgery vulnerability was identified in GitHub Enterprise Server that allowed an attacker to execute unauthorized actions on behalf of an unsuspecting user. A mitigating factor is that user interaction is required. This vulnerability affected GitHub Enterprise Server 3.12.0 and was fixed in versions 3.12.1. This vulnerability was reported via the GitHub Bug Bounty program.

An Improper Privilege Management vulnerability was identified in GitHub Enterprise Server that allowed an attacker to use the Enterprise Actions GitHub Connect download token to fetch private repository data. An attacker would require an account on the server instance with non-default settings for GitHub Connect. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.12 and was fixed in versions 3.8.16, 3.9.11, 3.10.8, and 3.11.6. This vulnerability was reported via the GitHub Bug Bounty program.

A GitHub App installed in organizations could upgrade some permissions from read to write access without approval from an organization administrator. An attacker would require an account with administrator access to install a malicious GitHub App. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.14 and was fixed in versions 3.14.1, 3.13.4, 3.12.9, 3.11.15, and 3.10.17. This vulnerability was reported via the GitHub Bug Bounty program.

A path collision and arbitrary code execution vulnerability was identified in GitHub Enterprise Server that allowed container escape to escalate to root via ghe-firejail path. Exploitation of this vulnerability requires Enterprise Administrator access to the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise prior to 3.15 and was fixed in versions 3.14.3, 3.13.6, 3.12.11, and 3.11.17. This vulnerability was reported via the GitHub Bug Bounty program.

An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed unauthorized internal users to access sensitive secret scanning alert data intended only for business owners. This issue could be exploited only by organization members with a personal access token (PAT) and required that secret scanning be enabled on user-owned repositories. This vulnerability affected GitHub Enterprise Server versions after 3.13.0 but prior to 3.14.0 and was fixed in version 3.13.2.

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.

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.

CRITICAL: An improper neutralization of argument delimiters in a command vulnerability was identified in GitHub Enterprise Server that enabled remote code execution. To exploit this vulnerability, an attacker would need permission to create and build GitHub Pages using GitHub Actions. This vulnerability affected only version 3.7.0 of GitHub Enterprise Server and was fixed in version 3.7.1. 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.

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.

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed remote code execution when building a GitHub Pages site. To exploit this vulnerability, an attacker would need permission to create and build a GitHub Pages site on the instance. This vulnerability was fixed in versions 3.3.17, 3.4.12, 3.5.9, 3.6.5 and 3.7.2. This vulnerability was reported via the GitHub Bug Bounty program.

An improper limitation of a pathname to a restricted directory vulnerability was identified in GitHub Enterprise Server that enabled remote code execution. A check was added within Pages to ensure the working directory is clean before unpacking new content to prevent an arbitrary file overwrite bug. This vulnerability affected only version 3.7.0 of GitHub Enterprise Server and was fixed in version 3.7.1. This vulnerability was reported via the GitHub Bug Bounty program.

An incorrect authorization vulnerability was identified in GitHub Enterprise Server that allowed a scoped user-to-server token to escalate to full admin/owner privileges. An attacker would require an account with admin access to install a malicious GitHub App. This vulnerability was fixed in versions 3.3.17, 3.4.12, 3.5.9, and 3.6.5. This vulnerability was reported via the GitHub Bug Bounty program.

An incorrect authorization vulnerability was identified in GitHub Enterprise Server that allowed a repository-scoped token with read/write access to modify Action Workflow files without a Workflow scope. The Create or Update file contents API should enforce workflow scope. This vulnerability affected all versions of GitHub Enterprise Server prior to version 3.7 and was fixed in versions 3.3.16, 3.4.11, 3.5.8, and 3.6.4. This vulnerability was reported via the GitHub Bug Bounty program.

An incorrect authorization vulnerability was identified in GitHub Enterprise Server, allowing for escalation of privileges in GraphQL API requests from GitHub Apps. This vulnerability allowed an app installed on an organization to gain access to and modify most organization-level resources that are not tied to a repository regardless of granted permissions, such as users and organization-wide projects. Resources associated with repositories were not impacted, such as repository file content, repository-specific projects, issues, or pull requests. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.7.1 and was fixed in versions 3.3.16, 3.4.11, 3.5.8, 3.6.4, 3.7.1. This vulnerability was reported via the GitHub Bug Bounty program.

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed arbitrary file reading when building a GitHub Pages site. 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 since 3.7 and was fixed in version 3.7.6. This vulnerability was reported via the GitHub Bug Bounty program.

An information disclosure vulnerability was identified in GitHub Enterprise Server that allowed private repositories to be added to a GitHub Actions runner group via the API by a user who did not have access to those repositories, resulting in the repository names being shown in the UI. To exploit this vulnerability, an attacker would need access to the GHES instance, permissions to modify GitHub Actions runner groups, and successfully guess the obfuscated ID of private repositories. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.7 and was fixed in versions 3.3.17, 3.4.12, 3.5.9, 3.6.5. This vulnerability was reported via the GitHub Bug Bounty program.

A code injection vulnerability was identified in GitHub Enterprise Server that allowed setting arbitrary environment variables from a single environment variable value in GitHub Actions when using a Windows based runner. To exploit this vulnerability, an attacker would need existing permission to control the value of environment variables for use with GitHub Actions. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.8.0 and was fixed in versions 3.4.15, 3.5.12, 3.6.8, 3.7.5. This vulnerability was reported via the GitHub Bug Bounty program.

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed remote code execution when building a GitHub Pages site. 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 versions 3.8 and was fixed in versions 3.7.7, 3.6.10, 3.5.14, and 3.4.17. This vulnerability was reported via the GitHub Bug Bounty program.

An incorrect comparison vulnerability was identified in GitHub Enterprise Server that allowed commit smuggling by displaying an incorrect diff. To do so, an attacker would need write access to the repository and be able to correctly guess the target branch before it’s created by the code maintainer. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.9 and was fixed in versions 3.4.18, 3.5.15, 3.6.11, 3.7.8, and 3.8.1. This vulnerability was reported via the GitHub Bug Bounty program.