vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, the bufferAllocLimit enforcement in lib/setup-sandbox.js does not cover Buffer.concat(list, totalLength) or Buffer.from(arrayLike) with an attacker-controlled length, allowing sandbox code to perform large synchronous host external-memory allocations that bypass the configured cap and can exhaust the host process. This issue is fixed in version 3.11.6.
Metrics
Affected Vendors & Products
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History
Tue, 18 Aug 2026 16:30:00 +0000
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ssvc
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Mon, 17 Aug 2026 23:00:00 +0000
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Patriksimek
Patriksimek vm2 |
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Patriksimek
Patriksimek vm2 |
Mon, 17 Aug 2026 21:15:00 +0000
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| Description | vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, the bufferAllocLimit enforcement in lib/setup-sandbox.js does not cover Buffer.concat(list, totalLength) or Buffer.from(arrayLike) with an attacker-controlled length, allowing sandbox code to perform large synchronous host external-memory allocations that bypass the configured cap and can exhaust the host process. This issue is fixed in version 3.11.6. | |
| Title | vm2: bufferAllocLimit cap bypassed by Buffer.concat and Buffer.from arrayLike | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-08-17T20:55:32.019Z
Updated: 2026-08-18T15:38:37.608Z
Reserved: 2026-05-19T21:18:20.402Z
Link: CVE-2026-47683
Updated: 2026-08-18T15:38:32.606Z
Status : Deferred
Published: 2026-08-17T21:16:45.363
Modified: 2026-09-09T21:11:46.833
Link: CVE-2026-47683
No data.