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OpenAdvisories
High · 8.6 CVE-2026-111767 EUVD-2026-105256GHSA-22jm-h49p-29qw

MCP TypeScript SDK: Experimental tasks were not tied to the session that created them

Published Oct 20, 2026 · Updated Oct 20, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
modelcontextprotocol typescript-sdk >= 1.24.0, < 1.32.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @modelcontextprotocol/sdk >= 1.24.0, < 1.32.0 1.32.0 GHSA-22jm-h49p-29qw

Advisories 1

References