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.

CVSS Vector

Affected Products

References

• https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7
• https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7