Critical severity · published Jun 12, 2026
CVE-2026-47131
vm2: Sandbox Escape
10.0
CVSS
0.8%
EPSS
No
On KEV
Description
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, by combining Buffer.call.call({}.__lookupGetter__, Buffer, "__proto__"), Buffer.call.call({}.__lookupSetter__, Buffer, "__proto__"), and Node.js's ERR_INVALID_ARG_TYPE Error, the host's TypeError constructor can be obtained, which allows the escape from the sandbox. This allows attackers to run arbitrary code. This issue has been patched in version 3.11.4.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VM
vm2 · patriksimek
< 3.11.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47131
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47131
github.com
https://github.com/patriksimek/vm2/commit/27c525f4615e2b983f122e2bed327d810126f5c8
github.com
https://github.com/patriksimek/vm2/releases/tag/v3.11.4
github.com
https://github.com/patriksimek/vm2/security/advisories/GHSA-v6mx-mf47-r5wg
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