vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-vwrp-x96c-mhwq vm2: Mutable Proxies for Host Intrinsic Prototypes Allows Sandbox Escape
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 14 May 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 14 May 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Vm2 Project
Vm2 Project vm2
CPEs cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*
Vendors & Products Vm2 Project
Vm2 Project vm2

Wed, 13 May 2026 20:15:00 +0000

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

Wed, 13 May 2026 18:00:00 +0000

Type Values Removed Values Added
Description vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.
Title vm2: Sandbox escape
Weaknesses CWE-1321
CWE-94
References
Metrics cvssV3_1

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


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-14T15:37:53.475Z

Reserved: 2026-05-04T21:24:36.505Z

Link: CVE-2026-44005

cve-icon Vulnrichment

Updated: 2026-05-14T15:37:49.761Z

cve-icon NVD

Status : Modified

Published: 2026-05-13T18:16:17.257

Modified: 2026-05-14T16:16:23.313

Link: CVE-2026-44005

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-13T20:00:04Z

Weaknesses