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CVE-2026-44004

7.5 high SSVC exploitation: poc Modified
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.5 · vm2_projectNVD modified 2026-10-26 17:10

Affected (CPE criteria) 1

  • cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*

References 6