EUVD-2026-21061

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run ...

DNS Rebinding

@modelcontextprotocol/sdk is vulnerable to DNS Rebinding. The vulnerability is due to DNS rebinding protection being disabled by default in unauthenticated HTTP-based servers, which allows an attacker to exploit a malicious website to bypass same-origin policy and send requests to the local MCP...