CVE-2026-26956

Critical

Open

TLP:CLEAR

vm2: WASM Sandbox Escape (Node 25 only)

NVD CVE.org

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Description

vm2 is an open source vm/sandbox for Node.js. In version 3.10.4, vm2 is vulnerable to full sandbox escape with arbitrary code execution. Attacker code inside VM.run() obtains host process object and runs host commands with zero host cooperation. This issue has been patched in version 3.10.5.

Details

CVSS Score: 9.8
EPSS Score ⓘ: 0.92%

57.1th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence: 90%
Published: May 4, 2026
Last Modified: Jul 15, 2026

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