AIKIDO-2026-927792
vm2 is vulnerable to Sandbox Escape
99
Critical Risk
This Affects:
vm2TL;DR
vm2 sanitizes host errors thrown into the sandbox to strip references to host objects, but the handleException routine in the sandbox setup never inspects the ES2022 Error.cause property. When an embedder-exposed host function throws an error whose cause references a host object such as process, sandbox code reads that unsanitized reference from the caught error. Traversing it reaches host module loading and arbitrary command execution, escaping the sandbox. The fix recursively sanitizes cause on all caught errors alongside the existing SuppressedError and AggregateError handling.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and your application exposes a host function to the sandbox that can throw an error whose cause property references a host object such as process.
Background info
vm2 is vulnerable to Sandbox Escape in versions 0.0.1 - 3.11.5.
How to fix this
Upgrade the vm2 library to the patch version.
Links
GitHub Release
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SOC 2Compliant
ISO 27001Compliant