MCP TypeScript server SDK: Shared transport or server instances delivered one HTTP client's messages to another
影響: npm:@modelcontextprotocol/server >= 2.0.0, < 2.3.0 → 2.3.0
In affected versions, an MCP server reached over HTTP could deliver one client's responses and notifications to another client. This happened when clients shared one stateless transport, or one McpServer or Server instance. Messages were matched to a connection by JSON-RPC id alone. SDK clients number requests from 0, so ids collide in normal use. Am I affected? Yes, if more than one client can reach your HTTP endpoint and your code creates the transport or the server once at startup, i…
| CVE | CVE-2026-111770 |
|---|---|
| 정보원 | GitHub Advisory Database |
| 수집 시각 | 2026. 10. 22. 오전 01:17 |
| 데이터 | Markdown JSON |
2026. 10. 21. 오전 05:07, GitHub Advisory Database에서 "MCP TypeScript server SDK: Shared transport or server instances delivered one HTTP client's messages to another"을(를) 게시했습니다 (유형: 취약점 권고). 심각도는 "높음"(high)입니다. 관련 기술: JavaScript / Node.js. CVE: CVE-2026-111770.