PT-2026-84530

Name of the Vulnerable Software and Affected Versions GitHub Enterprise Server versions prior to 3.22 Description A server-side request forgery SSRF issue exists in the Manage API, allowing an unauthenticated attacker to force the server to send crafted outbound requests to a host under their...

CVE-2026-19118: Time-of-check Time-of-use (TOCTOU) Race Condition

A time-of-check time-of-use race condition vulnerability was identified in GitHub Enterprise Server that allowed remote code execution. Exploitation required an authenticated user with write access to a repository and precise timing of concurrent upload requests. This vulnerability affected all...

PT-2026-84532

Name of the Vulnerable Software and Affected Versions GitHub Enterprise Server versions prior to 3.22 Description A Server-Side Request Forgery SSRF issue exists where insufficient network isolation allows malicious pre-receive hook code to impersonate an internal service. This enables the...

CVE-2026-18730: Server-Side Request Forgery (SSRF)

A server-side request forgery SSRF vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause the Manage API to send crafted outbound requests to an attacker-controlled host. An unauthenticated endpoint parsed an attacker-supplied cluster...

CVE-2026-76851: Server-Side Request Forgery (SSRF)

A Server-Side Request Forgery SSRF vulnerability was identified in GitHub Enterprise Server that allowed remote code execution on the instance. Insufficient network isolation allowed malicious pre-receive hook code to impersonate an internal service and redirect trusted internal requests to a...

CVE-2026-15996

A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause excessive CPU consumption and exhaust the pool of request-handling worker processes by sending a crafted form-encoded HTTP POST request containing deeply nested parameter...

CVE-2026-17556

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to delete arbitrary files and directories on the instance, including the entire user storage directory containing Git LFS objects, release assets, attachments, and avatars. The...

CVE-2026-15996

The CVE describes a denial-of-service flaw in GitHub Enterprise Server where unauthenticated attackers could trigger excessive CPU usage and exhaust request-handling worker processes by sending a crafted form-encoded HTTP POST containing deeply nested parameters. Because parameter parsing occurre...

EUVD-2026-53611

A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause excessive CPU consumption and exhaust the pool of request-handling worker processes by sending a crafted form-encoded HTTP POST request containing deeply nested parameter...

CVE-2026-15996 Denial of service vulnerability in GitHub Enterprise Server allowed unauthenticated service disruption via deeply nested request parameters

A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause excessive CPU consumption and exhaust the pool of request-handling worker processes by sending a crafted form-encoded HTTP POST request containing deeply nested parameter...

CVE-2026-17556 Path traversal in GitHub Enterprise Server allowed unauthenticated deletion of instance storage via the X-GitHub-Request-Id header

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to delete arbitrary files and directories on the instance, including the entire user storage directory containing Git LFS objects, release assets, attachments, and avatars. The...

EUVD-2026-53608

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to delete arbitrary files and directories on the instance, including the entire user storage directory containing Git LFS objects, release assets, attachments, and avatars. The...

CVE-2026-17556 Path traversal in GitHub Enterprise Server allowed unauthenticated deletion of instance storage via the X-GitHub-Request-Id header

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to delete arbitrary files and directories on the instance, including the entire user storage directory containing Git LFS objects, release assets, attachments, and avatars. The...

CVE-2026-17556

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to delete arbitrary files and directories on the instance, including the entire user storage directory containing Git LFS objects, release assets, attachments, and avatars. The...

CVE-2026-17556

CVE-2026-17556 is a path traversal vulnerability in GitHub Enterprise Server (all versions prior to 3.22). The X-GitHub-Request-Id request header was used without sanitization as a filesystem path segment for the upload buffer directory. An unauthenticated attacker with only network reachability ...

CVE-2026-17556: Improper Limitation of a Pathname to a Restricted Directory

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to delete arbitrary files and directories on the instance, including the entire user storage directory containing Git LFS objects, release assets, attachments, and avatars. The...

CVE-2026-15996: Uncontrolled Recursion

A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause excessive CPU consumption and exhaust the pool of request-handling worker processes by sending a crafted form-encoded HTTP POST request containing deeply nested parameter...

CVE-2026-15783

A missing authorization vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user with write access to any repository to read metadata from private repositories they did not have access to, including private repository owners and names, branch names, commit SHAs,...

CVE-2026-15007

A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user to cause service disruption by supplying a repository release notes configuration file containing deeply nested YAML. When release notes were generated, the configuration file was parse...

CVE-2026-15343

A path traversal vulnerability was identified in GitHub Enterprise Server that allowed an attacker who had code execution inside the Dependabot updater container to write files to arbitrary repository paths, including GitHub Actions workflow files under .github/workflows/ as the path validation d...