CVE-2026-5845 Improper authorization fallback allows scoped user-to-server token installation escape in GitHub Enterprise Server

An improper authorization vulnerability in scoped user-to-server ghu token authorization in GitHub Enterprise Server allows an authenticated attacker to access private repositories outside the intended installation scope, which can include write operations, via an authorization fallback that...

CVE-2026-5845

An improper authorization vulnerability in scoped user-to-server ghu token authorization in GitHub Enterprise Server allows an authenticated attacker to access private repositories outside the intended installation scope, which can include write operations, via an authorization fallback that...

CVE-2026-5845 Improper authorization fallback allows scoped user-to-server token installation escape in GitHub Enterprise Server

An improper authorization vulnerability in scoped user-to-server ghu token authorization in GitHub Enterprise Server allows an authenticated attacker to access private repositories outside the intended installation scope, which can include write operations, via an authorization fallback that...

CVE-2026-3307

An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed an attacker with admin access on one repository to modify the secret scanning push protection delegated bypass reviewer list on another repository by manipulating the ownerid parameter in the request bod...

CVE-2026-3307 Authorization bypass in GitHub Enterprise Server secret scanning push protection allows cross-repository modification of delegated bypass reviewers

An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed an attacker with admin access on one repository to modify the secret scanning push protection delegated bypass reviewer list on another repository by manipulating the ownerid parameter in the request bod...

CVE-2026-3307 Authorization bypass in GitHub Enterprise Server secret scanning push protection allows cross-repository modification of delegated bypass reviewers

An authorization bypass vulnerability was identified in GitHub Enterprise Server that allowed an attacker with admin access on one repository to modify the secret scanning push protection delegated bypass reviewer list on another repository by manipulating the ownerid parameter in the request bod...

CVE-2026-3307

GitHub Enterprise Server vulnerability CVE-2026-3307 allows an admin on one repository to modify the secret scanning push protection delegated bypass reviewers for another repository by changing the owner_id in the request body. Authorization is checked against the URL repository, but the action ...

CVE-2026-5512

CVE-2026-5512 describes an improper authorization vulnerability in GitHub Enterprise Server where an authenticated attacker could determine private repository names by numeric ID via the mobile upload policy API endpoint. The issue arises from a failure to perform an early authorization check and...

CVE-2026-5512

An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their numeric ID. The mobile upload policy API endpoint did not perform an early authorization check, and validation error...

CVE-2026-5512 Improper authorization vulnerability in GitHub Enterprise Server allowed disclosure of private repository names via mobile upload policy API

An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their numeric ID. The mobile upload policy API endpoint did not perform an early authorization check, and validation error...

CVE-2026-5512 Improper authorization vulnerability in GitHub Enterprise Server allowed disclosure of private repository names via mobile upload policy API

An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated attacker to determine the names of private repositories by their numeric ID. The mobile upload policy API endpoint did not perform an early authorization check, and validation error...

CVE-2026-4296

An incorrect regular expression vulnerability was identified in GitHub Enterprise Server that allowed an attacker to bypass OAuth redirect URI validation. An attacker with knowledge of a first-party OAuth application's registered callback URL could craft a malicious authorization link that, when...

CVE-2026-4296

CVE-2026-4296 concerns an incorrect regular expression vulnerability in GitHub Enterprise Server that bypasses the OAuth redirect URI validation. An attacker who knows a first-party OAuth app’s registered callback URL could craft a malicious authorization link that, when clicked by a victim, redi...

CVE-2026-4296 Incorrect Regular Expression vulnerability in GitHub Enterprise Server allowed unauthorized access to user accounts via OAuth callback URL validation bypass

An incorrect regular expression vulnerability was identified in GitHub Enterprise Server that allowed an attacker to bypass OAuth redirect URI validation. An attacker with knowledge of a first-party OAuth application's registered callback URL could craft a malicious authorization link that, when...

CVE-2026-4821

An improper neutralization of special elements vulnerability was identified in GitHub Enterprise Server that allowed an authenticated Management Console administrator to execute arbitrary OS commands via shell metacharacter injection in proxy configuration fields such as httpproxy. Exploitation o...

CVE-2026-4821 Proxy configuration command injection vulnerability found in GitHub Enterprise Server Management Console configuration API

An improper neutralization of special elements vulnerability was identified in GitHub Enterprise Server that allowed an authenticated Management Console administrator to execute arbitrary OS commands via shell metacharacter injection in proxy configuration fields such as httpproxy. Exploitation o...

CVE-2026-4821

The CVE-2026-4821 entry describes an improper neutralization of special elements vulnerability in GitHub Enterprise Server . It allows an authenticated Management Console administrator to execute arbitrary OS commands via shell metacharacter injection in proxy configuration fields (e.g., http_pro...

CVE-2026-4821 Proxy configuration command injection vulnerability found in GitHub Enterprise Server Management Console configuration API

An improper neutralization of special elements vulnerability was identified in GitHub Enterprise Server that allowed an authenticated Management Console administrator to execute arbitrary OS commands via shell metacharacter injection in proxy configuration fields such as httpproxy. Exploitation o...

CVE-2026-5921

CVE-2026-5921 describes a server-side request forgery (SSRF) in GitHub Enterprise Server. The notebook rendering service can be reached via an open redirect chain when private mode is disabled, allowing an unauthenticated SSRF to internal services. A timing side-channel across a regex-filtered in...

CVE-2026-5921

A server-side request forgery SSRF vulnerability was identified in GitHub Enterprise Server that allowed an attacker to extract sensitive environment variables from the instance through a timing side-channel attack against the notebook rendering service. When private mode was disabled, the notebo...