CVE-2026-44004

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.

PUBLISHED Reserved 2026-05-04 | Published 2026-05-13 | Updated 2026-05-13 | Assigner GitHub_M

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

References

github.com/...ek/vm2/security/advisories/GHSA-6785-pvv7-mvg7 exploit

github.com/...ek/vm2/security/advisories/GHSA-6785-pvv7-mvg7

cve.org (CVE-2026-44004)

nvd.nist.gov (CVE-2026-44004)

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