CVE-2026-26956

vm2: WASM Sandbox Escape (Node 25 only)

State: Published
Severity: 9.8 Critical
Published: May 4, 2026
Updated: Jul 15, 2026
Reserved: Feb 16, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	redhat-SADP

Weaknesses

CWE-693 Protection Mechanism Failure
CWE-653 Improper Isolation or Compartmentalization

Affected Products

Product	Versions
vm2patriksimek	= 3.10.4Affected

References

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