CVE-2026-43997

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.

CVSS 3.1

10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS

1.0% chance of exploitation in the next 30 days; higher than 61% of CVEs (scores of 2026-10-25)

CWEs

CWE-94, CWE-653

Published

2026-05-13

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• vm2_project:vm2

Packages (OSV)

References

• https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6
• https://access.redhat.com/errata/RHSA-2026:50850
• https://access.redhat.com/security/cve/CVE-2026-43997
• https://bugzilla.redhat.com/show_bug.cgi?id=2477203
• https://github.com/patriksimek/vm2/security/advisories/GHSA-47x8-96vw-5wg6

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