CVE-2026-44004
vm2: Host Process OOM DoS via Buffer.alloc (Timeout Bypass)
HIGH 8.6EPSS 0.7%
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.
- Affected
- patriksimek · vm2
- CVSS v3.1 CNA
- 8.6 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - CVSS v3.1 GITHUB
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.66% chance of exploitation in the next 30 days, 51st percentile
- Published
- 2026-05-13
- Updated
- 2026-09-07