@modelcontextprotocol/sdk vulnerabilities

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CVE-IDSeverityPackage summary
CVE-2026-25536High@modelcontextprotocol/sdk: @modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuseCVE-2026-0621High@modelcontextprotocol/sdk: Anthropic's MCP TypeScript SDK has a ReDoS vulnerabilityCVE-2025-66414High@modelcontextprotocol/sdk: Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

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