CVE-2026-43997

vm2: Sandbox Escape

Published May 13, 2026 CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed
Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, it is possible to obtain the host Object. There are various ways to use the host Object, to escape the sandbox, one example would be using HostObject.getOwnPropertySymbols to obtain Symbol(nodejs.util.inspect.custom). This vulnerability is fixed in 3.11.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-47x8-96vw-5wg6 vm2 Access to Host Object Enables Sandbox Escape
History
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
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
First Time appeared Patriksimek
Patriksimek vm2
Vendors & Products Patriksimek
Patriksimek vm2
Type Values Removed Values Added
Description vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, it is possible to obtain the host Object. There are various ways to use the host Object, to escape the sandbox, one example would be using HostObject.getOwnPropertySymbols to obtain Symbol(nodejs.util.inspect.custom). This vulnerability is fixed in 3.11.0.
Title vm2: Sandbox Escape
Weaknesses CWE-94
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 7, 2026, 12:05 PM
Reserved
May 4, 2026, 8:24 PM
Status
Modified
Published
May 13, 2026, 6:16 PM
Modified
Oct 26, 2026, 5:10 PM