Critical severity · published Aug 17, 2026
CVE-2026-47686
vm2: Missing Error.cause Sanitization Enables VM2 Sandbox Escape to RCE
9.9
CVSS
0.6%
EPSS
No
On KEV
Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.6, handleException() in lib/setup-sandbox.js sanitizes SuppressedError.error, SuppressedError.suppressed, and AggregateError.errors but does not sanitize Error.cause, allowing sandbox code to obtain a powerful host object such as process from an embedder-exposed host function that throws an error with that object as its cause and then execute arbitrary host commands. This issue is fixed in version 3.11.6.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VM
vm2 · patriksimek
< 3.11.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47686
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47686
github.com
https://github.com/patriksimek/vm2/commit/7e3faaf550f4ab975bf4cdde183fcec49b056d8e
github.com
https://github.com/patriksimek/vm2/releases/tag/3.11.6
github.com
https://github.com/patriksimek/vm2/security/advisories/GHSA-m283-3h24-438v
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