Security Advisory

CVE-2026-44004

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-13 17:31:16

Last updated 2026-07-15 00:55:14

Assigner GitHub_M

CVSS score 7.5

State PUBLISHED

Description

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.

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