Bug 2517643 (CVE-2026-47683) - CVE-2026-47683 vm2: vm2: Denial of Service due to memory allocation limit bypass
Summary: CVE-2026-47683 vm2: vm2: Denial of Service due to memory allocation limit bypass
Keywords:
Status: NEW
Alias: CVE-2026-47683
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-17 21:12 UTC by OSIDB Bzimport
Modified: 2026-09-17 18:27 UTC (History)
15 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-17 21:12:01 UTC 
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.
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