CVE-2026-111767

A flaw was found in the Model Context Protocol MCP TypeScript SDK @modelcontextprotocol/sdk. The experimental task storage feature taskStore does not verify which client session created a given task when multiple clients share a task store. A remote attacker sharing the same server instance can...

CVE-2026-111767

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 ea...

CVE-2026-111767

The MCP TypeScript SDK (@modelcontextprotocol/sdk) versions 1.24.0 through 1.31.0 are vulnerable due to a flaw in the experimental taskStore feature. The root cause is that tasks were not tied to specific sessions, allowing clients sharing a single InMemoryTaskStore to unauthorizedly list, read, ...

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

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 ea...

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

Summary In affected versions, 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. Experimental tasks are deprecated. The 2026-07-28 specification replaced them with a redesigned...

GHSA-22JM-H49P-29QW MCP TypeScript SDK: Experimental tasks were not tied to the session that created them

Summary In affected versions, 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. Experimental tasks are deprecated. The 2026-07-28 specification replaced them with a redesigned...

PT-2026-118611

Name of the Vulnerable Software and Affected Versions @modelcontextprotocol/sdk versions 1.24.0 through 1.31.0 Description The experimental tasks feature taskStore fails to verify which session created a specific task. Consequently, clients sharing a single InMemoryTaskStore can list, read, and...