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 7.5EPSS 0.41900000000000004%Risk 0.78
View source- Published
- 2026-05-13 18:16:17
- Affected versions
- <3.11.0
- Type
- Package
- Last modified
- 2026-08-06 13:18:15
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H