CVE-2026-111767 – MCP TypeScript SDK: Experimental tasks were not tied to the session that created them

​CVE ID :CVE-2026-111767

Published : Oct. 20, 2026, 6:28 p.m. | 59 minutes ago

Description :MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. From version 1.24.0 to before version 1.32.0, the experimental tasks feature (taskStore) did not check which session created a task. Clients sharing one InMemoryTaskStore could list, read and cancel each other’s tasks. This issue has been patched in version 1.32.0.

Severity: 8.6 | HIGH

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