AIKIDO-2026-970950
vm2 is vulnerable to Improper Access Control
85
High Risk
This Affects:
vm2TL;DR
Negative builtin denials are matched by exact module name rather than by module family, so a denial such as -fs blocks only fs and not its subpaths. Sandboxed code requires fs/promises or node:fs/promises to reach filesystem operations despite fs being denied. This allows host file creation and writes that the denylist was meant to prevent. The fix matches denied builtins across their module family.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you rely on a negative builtin denylist entry such as -fs to block filesystem access.
Background info
vm2 is vulnerable to Improper Access Control in versions 0.0.1 - 3.11.6.
How to fix this
Upgrade the vm2 library to the patch version.
Are You Affected?
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