CVE-2026-47686

CRITICAL 9.9

vm2: Missing Error.cause Sanitization Enables VM2 Sandbox Escape to RCE

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, handleException() in lib/setup-sandbox.js sanitizes SuppressedError.error, SuppressedError.suppressed, and AggregateError.errors but does not sanitize Error.cause, allowing sandbox code to obtain a powerful host object such as process from an embedder-exposed host function that throws an error with that object as its cause and then execute arbitrary host commands. This issue is fixed in version 3.11.6.

CWE	CWE-693
Vendor	patriksimek
Product	vm2
Published	Aug 17, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

patriksimek / vm2

< 3.11.6

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/patriksimek/vm2/security/advisories/GHSA-m283-3h24-438v github.com: https://github.com/patriksimek/vm2/commit/7e3faaf550f4ab975bf4cdde183fcec49b056d8e github.com: https://github.com/patriksimek/vm2/releases/tag/3.11.6