CVE-2026-59971 MySQL MCP Server: Missing Origin/Host Validation in SSE Transport Enables Unauthenticated SQL Execution (DNS Rebinding / Direct Exposure)

MySQL MCP Server is a Model Context Protocol server that enables secure interaction with MySQL databases. Prior to 0.4.2, setting MCPTRANSPORT=sse causes src/mysqlmcpserver/server.py to construct SseServerTransport without securitysettings or enablednsrebindingprotection, while the Starlette rout...