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

影響: npm:@modelcontextprotocol/sdk >= 1.24.0, < 1.32.0 → 1.32.0

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 extension. The best course of action is to stop using them. Am I affected? Only if your HTTP server passes taskStore to McpServer or Server. If grep -ri taskstore --exclude-dir=node_modules . finds no…

Read on GitHub Advisory Database

On 10/21/2026, 03:26 AM, GitHub Advisory Database published "MCP TypeScript SDK: Experimental tasks were not tied to the session that created them" (type: Advisory). Severity is "High" (high). Related technologies: JavaScript / Node.js. CVE: CVE-2026-111767.