CVE-2026-44004

CVE-2026-44004 · vm2: Host Process OOM DoS via Buffer.alloc (Timeout Bypass)

This page contains facts from public vulnerability sources. Check the original advisory before updating.

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, sandboxed code can call Buffer.alloc() with an arbitrary size to allocate memory directly on the host heap. Because Buffer.alloc is a synchronous C++ native call, vm2's timeout option cannot interrupt it. A single request can exhaust host memory and crash the process with a FATAL ERROR: Reached heap limit. This vulnerability is fixed in 3.11.0.

CVSS 7.5 · High · EPSS 0.4% · Fix available

Published

2026-05-13T17:31:16.281Z

Updated

2026-09-07T12:04:56.598Z

Stack: node

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