CVE-2026-43997

Critical

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.

SeverityCritical

CVSS10.0

Exploit probability—

ProductVm2

PublishedMay 13, 2026

First seenMay 13, 2026

Weakness typeCWE-94Code injection

How to fix

Update

vm2_project vm23.11.0 or later
vm23.11.0 or later

Vendor advisories

access.redhat.com/errata/RHSA-2026:50850

Affected products

Product	Affected versions	Fixed in
vm2_project vm2	v < 3.11.0	3.11.0
vm2npm	v < 3.11.0	3.11.0

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