Live › vulnerability › CVE-2026-111767
Go to dashboardThe MCP TypeScript SDK's experimental tasks feature did not check which session created a task, so clients sharing one InMemoryTaskStore could list, read and cancel each other's tasks. The flaw is in the MCP server code path, so it is ai-tooling.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
| Product | Ecosystem | Affected | Fixed in |
|---|
| @modelcontextprotocol/sdk | npm | >= 1.24.0, < 1.32.0 | 1.32.0 |
grep -ri taskstore --exclude-dir=node_modules . (no hits means not affected)
Check package.json or lockfile for @modelcontextprotocol/sdk between 1.24.0 and 1.31.0
Confirm whether McpServer or Server is constructed with a taskStore option
1.32.0 or laterEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
Only if your HTTP server passes taskStore to McpServer or Server. If grep -ri taskstore --exclude-dir=node_modules . finds nothing, you are not affected.
Affected versions: @modelcontextprotocol/sdk 1.24.0 through 1.31.0. The 2.x packages are not affected.
Upgrade to @modelcontextprotocol/sdk 1.32.0 or later. Each task is now tied to the session that created it, so a client that starts a new session can no longer reach its earlier tasks.
If you cannot upgrade yet, remove taskStore, or create one InMemoryTaskStore per session.
This page as .md · .json · in your agent: get_signal("CVE-2026-111767")
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