Description
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the fix for GHSA-8hg8-63c5-gwmx (CVE-2023-37903) introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check uses strict equality (options.require === false), which is trivially bypassed by omitting the require option entirely. When require is not specified, options.require is undefined, not false. The strict equality check fails, so the security guard is skipped. Immediately after (line 280), the destructuring default require: requireOpts = false assigns requireOpts = false, producing the exact configuration the patch was designed to prevent. This issue has been patched in version 3.11.4.
Published: 2026-06-12
Score: 10 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-m4wx-m65x-ghrr vm2 has a CVE-2023-37903 patch bypass: nesting:true without explicit require still allows full RCE
History

Tue, 16 Jun 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-480
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 12 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Patriksimek
Patriksimek vm2
Vendors & Products Patriksimek
Patriksimek vm2

Fri, 12 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 12 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Description vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the fix for GHSA-8hg8-63c5-gwmx (CVE-2023-37903) introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check uses strict equality (options.require === false), which is trivially bypassed by omitting the require option entirely. When require is not specified, options.require is undefined, not false. The strict equality check fails, so the security guard is skipped. Immediately after (line 280), the destructuring default require: requireOpts = false assigns requireOpts = false, producing the exact configuration the patch was designed to prevent. This issue has been patched in version 3.11.4.
Title vm2: GHSA-8hg8-63c5-gwmx patch bypass: nesting:true without explicit require still allows full RCE
Weaknesses CWE-913
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-13T03:55:56.787Z

Reserved: 2026-05-18T19:50:18.696Z

Link: CVE-2026-47137

cve-icon Vulnrichment

Updated: 2026-06-12T14:59:15.587Z

cve-icon NVD

Status : Deferred

Published: 2026-06-12T15:16:28.137

Modified: 2026-06-12T16:03:15.620

Link: CVE-2026-47137

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-06-12T14:15:34Z

Links: CVE-2026-47137 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-18T02:00:05Z

Weaknesses