Is CVE-2026-111767 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-111767?

CVE-2026-111767 has a CVSS v3 severity of HIGH (8.6).

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CVE-2026-111767

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.