CVE-2026-92935
vm2 NodeVM Remote Code Execution via Array-Shaped Require
- State
- Published
- Severity
- 9.5 Critical
- Published
- Sep 17, 2026
- Updated
- Sep 17, 2026
- Reserved
- Sep 17, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.5 Critical | 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 | VulnCheck |
| 3.1 | 9.0 Critical | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-913 Improper Control of Dynamically-Managed Code Resources
Affected Products
| Product | Versions |
|---|---|
vm2patriksimek |
|
References
- GitHub Security Advisory (GHSA-8hr7-r645-pc6w)vendor-advisory
- Patch Commitpatch
- VulnCheck Advisory: vm2 NodeVM Remote Code Execution via Array-Shaped Requirethird-party-advisory
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