Github Mcp Server vulnerabilities

1 vulnerability

Known vulnerabilities in Github Mcp Server, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

7.5CVE-2026-47427githubgithub-mcp-server+2
EPSS score
0.77%
GitHub MCP Server is GitHub's official MCP Server. Prior to 1.1.0, the CompletionsHandler function in pkg/github/server.go accesses params.Ref without first checking whether it is nil, so a completion/complete request with a missing or empty ref field triggers a nil pointer dereference and a Go runtime panic; because the crash occurs before any authentication or token validation, any unauthenticated client able to send JSON-RPC messages can crash the server, resulting in a complete denial of service. This issue is fixed in version 1.1.0.