CVE-2026-92935: critical vulnerability in patriksimek vm2
vm2 NodeVM Remote Code Execution via Array-Shaped Require
Published
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48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.5epss 0.6%
from disclosure to weapon36 days
Published on NVDSep 17
1st PoC+36d
vm2 is a sandbox for running untrusted Node.js code. In versions >= 3.11.4 and <= 3.11.6, the NodeVM constructor computes `hasRealRequireConfig` with `typeof requireOpts === 'object' && requireOpts !== null`, so an array-shaped `require` value (for example `require: []`) satisfies the guard that is meant to reject nesting without an explicit require configuration. `makeResolverFromLegacyOptions()` then destructures the array into undefined option fields and returns a resolver containing only `NESTING_OVERRIDE.vm2`. As a result, an attacker who can supply JavaScript executed by a NodeVM configured with truthy `nesting` and an array-shaped `require` (e.g. `new NodeVM({nesting: true, require: []})`) can require the host `vm2` module, create an inner NodeVM with an attacker-chosen builtin allowlist (such as `child_process`), and execute arbitrary commands with the privileges of the host Node.js process, escaping the sandbox. Outer builtin restrictions do not constrain the attacker-created inner NodeVM. This issue is fixed in vm2 3.11.7.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
patriksimek · vm2public PoCs found — 4
githubgithub.com/CompleteTech-LLC/vm2-nesting-check★ 0githubgithub.com/CompleTetech-Security/vm2-nesting-check★ 0githubgithub.com/CompleTech-Security/vm2-nesting-check★ 0githubgithub.com/CompleteTech-Security/vm2-nesting-check★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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