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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Wed, 13 May 2026 20:15:00 +0000
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Wed, 13 May 2026 19:30:00 +0000
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| 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. | |
| Title | vm2: Host Process OOM DoS via Buffer.alloc (Timeout Bypass) | |
| Weaknesses | CWE-770 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-13T18:19:28.423Z
Reserved: 2026-05-04T21:24:36.505Z
Link: CVE-2026-44004
Updated: 2026-05-13T18:08:08.236Z
Status : Undergoing Analysis
Published: 2026-05-13T18:16:17.123
Modified: 2026-05-13T19:17:26.547
Link: CVE-2026-44004
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