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-2026-4296

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-2025-14046

CVE-2025-14046 affects GitHub Enterprise Server; improper input neutralization allows user-supplied HTML to inject DOM elements with conflicting IDs, shadowing server-initialized data islands and causing unintended server-side POST requests or other unauthorized backend interactions. Exploitation...

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-2026-5845

Summary: CVE-2026-5845 affects GitHub Enterprise Server versions prior to 3.21, due to an improper authorization fallback in scoped user-to-server (ghu_) token handling. An authenticated attacker could access private repositories outside the intended installation scope, potentially including writ...

CVE-2026-6736

CVE-2026-6736 describes an authentication bypass in GitHub Enterprise Server (GHES) : when external authentication is enabled, the signup endpoint could create a local user account and establish a session without validating the external identity provider. This unauthenticated access required netw...

CVE-2025-11892

GitHub Enterprise Server is affected by CVE-2025-11892: an improper neutralization of input leads to DOM-based cross-site scripting via the Issues search label filter, enabling privilege escalation and unauthorized workflow triggers. Exploitation requires user interaction and access to a target s...

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-2026-1999

CVE-2026-1999 affects GitHub Enterprise Server and is an incorrect authorization vulnerability in the enable_auto_merge mutation for pull requests. An attacker could merge their own PR into a repository without push access under specific conditions: the repository must allow forking, a clean PR s...

CVE-2026-3582

CVE-2026-3582 affects GitHub Enterprise Server. An Incorrect Authorization vulnerability allowed an authenticated user with a classic PAT lacking the repo scope to retrieve issues and commits from private/internal repositories via the search REST API, provided the user already had access to the r...

CVE-2026-0573

CVE-2026-0573 affects GitHub Enterprise Server. The repository_pages API insecurely follows HTTP redirects when fetching artifact URLs, preserving the Authorization header containing a privileged JWT. An authenticated user could redirect requests to an attacker-controlled domain, exfiltrate the A...

CVE-2026-2266

CVE-2026-2266 : In GitHub Enterprise Server, there is a DOM-based cross-site scripting vulnerability caused by improper neutralization of input in the task list content rendering. Authenticated users can craft malicious task list items in issues or pull requests to inject user-supplied HTML and e...