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-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-2026-3582

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-2024-1908

CVE-2024-1908 concerns GitHub Enterprise Server. The issue is an improper privilege management flaw that allowed an attacker with a non-default GitHub Connect setting and an account on the server to use the Enterprise Actions GitHub Connect download token to fetch private repository data. Affecte...

CVE-2025-8447

CVE-2025-8447 : GitHub Enterprise Server had an improper access-control issue enabling users with access to one repo to retrieve limited code from another repo by stacking a diff between repositories. An attacker needed the private-repo name and a branch/tag/commit SHA to trigger the compare/diff...

CVE-2026-14340

GitHub Enterprise Server (GitHub ES) suffers an incorrect authorization vulnerability (CVE-2026-14340) where a user-to-server token scoped to a GitHub App installation could perform write operations on public repositories outside the token’s scope. The root cause is an authorization check that on...

CVE-2026-8106

CVE-2026-8106 describes a reflected HTML injection in the GitHub Enterprise Server Management Console login page. The vulnerability lies in the redirect_to query parameter on the /setup/unlock endpoint, which is reflected into an HTML attribute without proper sanitization. An attacker could entic...

CVE-2026-18730

This is a server-side request forgery (SSRF) vulnerability in GitHub Enterprise Server affecting the Manage API . An unauthenticated endpoint parsed an attacker-supplied cluster configuration and issued gateway-to-agent requests whose HMAC authenticated only a timestamp , not the request path or ...

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-2026-7541

CVE-2026-7541 is a denial-of-service vulnerability in GitHub Enterprise Server. An unauthenticated attacker could trigger service disruption by sending crafted requests with deeply nested JSON payloads to an unauthenticated API endpoint. The endpoint parsed user-controlled JSON bodies without siz...

CVE-2026-9106

The CVE-2026-9106 issue concerns GitHub Enterprise Server where a UI misrepresentation allowed an OAuth app to gain unauthorized access to an organization’s runner management. A victim could be tricked into authorizing an app requesting the manage_runners:org scope because the scope was not shown...

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-2026-5921

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-2026-76851

A Server-Side Request Forgery (SSRF) vulnerability in GitHub Enterprise Server allowed remote code execution on the instance. The root cause was insufficient network isolation that permitted malicious pre-receive hook code to impersonate an internal service and redirect trusted internal requests ...

CVE-2026-19118

A time-of-check time-of-use (TOCTOU) race condition in GitHub Enterprise Server enabled remote code execution . Exploitation required an authenticated user with write access to a repository and precise timing of concurrent upload requests . All versions prior to 3.22 were affected; fixes are avai...

CVE-2025-11578

CVE-2025-11578 is a privilege-escalation vulnerability in GitHub Enterprise Server. An authenticated Enterprise admin could abuse a symlink escape in pre-receive hook environments to replace system binaries during hook cleanup and inject their SSH key into root’s authorized_keys, enabling root SS...

CVE-2025-13744

CVE-2025-13744 affects GitHub Enterprise Server. The issue is an Improper Neutralization of Input During Web Page Generation in the Filter (search) component, allowing attacker-controlled HTML to be rendered across GitHub and potentially exfiltrate sensitive information. An attacker must have per...

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-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-2026-2266

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...