CVE-2026-92956 vm2 - Sandbox Escape

vm2 3.10.1 through 3.11.6 contains a sandbox escape caused by manipulation of WebAssembly promise rejection and Symbol.species in default new VM() sandbox on Node.js 26, letting attackers gain host Node.js capabilities without special permissions, exploit requires Node.js 26 environment.

CVSS base score 10.0 /10
Critical
CISA KEV
Not listed
Public exploit
Proof of concept available
EPSS
0.59% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Sandbox Escape
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
17 September 2026
Updated
15 October 2026
Weakness
CWE-693

Vendor fix

Upgrade to version 3.11.7 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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