THREATOPS

THREAT OPS › Threat News › [NVD] CVE-2026-43997 (CRITICAL 10.0) — 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).

[NVD] CVE-2026-43997 (CRITICAL 10.0) — 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).

lownvdPublished 2026-05-13

CVE-2026-43997 CVSS: 10.0 CRITICAL Published: 2026-05-13T18:16:16.177

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.

Indicators of compromise

CVE-2026-43997cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-43997