vm2: GHSA-8hg8-63c5-gwmx patch bypass: nesting:true without explicit require still allows full RCE

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Summary

CVECVE-2026-47137
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-12 15:16:28 UTC
Updated2026-06-12 16:03:15 UTC
Descriptionvm2 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.

Risk And Classification

Primary CVSS: v3.1 10 CRITICAL from [email protected]

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

Problem Types: CWE-913 | CWE-913 CWE-913: Improper Control of Dynamically-Managed Code Resources

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
3.1CNADECLARED10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Patriksimek Vm2 affected < 3.11.4 Not specified

References

ReferenceSourceLinkTags
github.com/patriksimek/vm2/commit/86ab819f202c3a8dad88cef5705f2e416c5188d7 [email protected] github.com
github.com/patriksimek/vm2/commit/01a7552add345d5a6862623884e6b79a85bf0568 [email protected] github.com
github.com/patriksimek/vm2/security/advisories/GHSA-m4wx-m65x-ghrr [email protected] github.com
github.com/advisories/GHSA-g644-9gfx-q4q4 [email protected] github.com
github.com/patriksimek/vm2/releases/tag/v3.11.4 [email protected] github.com
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