CVE-2026-44004
Full vulnerability record from the local CVENow database.
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.
Severity
HIGH
CVSS score
7.5
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2026-05-13 18:16:17.123000
Last modified
2026-10-26 17:10:03.270000
View original CVE JSON
{
"id": "CVE-2026-44004",
"sourceIdentifier": "[email protected]",
"published": "2026-05-13T18:16:17.123",
"lastModified": "2026-10-26T17:10:03.270",
"vulnStatus": "Modified",
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"value": "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."
},
{
"lang": "es",
"value": "vm2 es una VM/sandbox de código abierto para Node.js. Antes de 3.11.0, el código en sandbox puede llamar a Buffer.alloc() con un tamaño arbitrario para asignar memoria directamente en el heap del host. Debido a que Buffer.alloc es una llamada nativa síncrona de C++, la opción de tiempo de espera de vm2 no puede interrumpirla. Una sola solicitud puede agotar la memoria del host y bloquear el proceso con un ERROR FATAL: Límite de heap alcanzado. Esta vulnerabilidad está corregida en 3.11.0."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
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