High severity7.5GHSA Advisory· Published May 13, 2026· Updated May 14, 2026
CVE-2026-44004
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
vm2npm | < 3.11.0 | 3.11.0 |
Affected products
3<= 3.10.5+ 1 more
- (no CPE)range: <= 3.10.5
- cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*range: <3.11.0
Patches
Vulnerability mechanics
References
4- github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-6785-pvv7-mvg7ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-44004ghsaADVISORY
- github.com/patriksimek/vm2/releases/tag/v3.11.0ghsaWEB
News mentions
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