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Known vulnerabilities in @modelcontextprotocol server

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CVE Summary Score Published
CVE-2026-111770 Model Context Protocol TypeScript SDK: Shared transport or server instances delivered one HTTP client's messages to another 7.7 High Nov 5, 2026
CVE-2026-111768 Model Context Protocol TypeScript SDK: One HTTP request within the default size limit could exhaust server memory during validation 7.5 High Nov 5, 2026
CVE-2026-111771 Model Context Protocol TypeScript SDK: Server bearer authentication accepted tokens issued for another service 6.8 Medium Nov 5, 2026

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