CVE-2026-93605: Protection Mechanism Failure in patriksimek vm2
vm2 NodeVM versions before 3.12.1 contain a sandbox escape vulnerability where the DANGEROUS_BUILTINS denylist omits child_process despite blocking other host-spawning modules. Attackers can require child_process and execute arbitrary commands on the host system when NodeVM is configured with builtin:['*'] or explicit child_process allowance.
AI Analysis
Technical Summary
The vm2 NodeVM sandbox in patriksimek vm2 versions prior to 3.12.1 contains a protection mechanism failure. Specifically, the DANGEROUS_BUILTINS denylist does not include the child_process module, even though other host-spawning modules are blocked. This omission enables attackers to require the child_process module and execute arbitrary commands on the host system if the NodeVM configuration includes builtin:['*'] or explicitly permits child_process. This vulnerability allows sandbox escape and remote code execution on the host.
Potential Impact
Successful exploitation allows an attacker to escape the sandbox environment and execute arbitrary commands on the host system without privileges or user interaction. Given the CVSS 10.0 score and vector indicating network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, availability, and security requirements, this vulnerability is critical and can lead to full system compromise.
Mitigation Recommendations
An official fix is available in patriksimek vm2 version 3.12.1. Users should upgrade to version 3.12.1 or later to remediate this vulnerability. Until upgraded, avoid configurations that include builtin:['*'] or explicitly allow child_process in NodeVM.
CVE-2026-93605: Protection Mechanism Failure in patriksimek vm2
Description
vm2 NodeVM versions before 3.12.1 contain a sandbox escape vulnerability where the DANGEROUS_BUILTINS denylist omits child_process despite blocking other host-spawning modules. Attackers can require child_process and execute arbitrary commands on the host system when NodeVM is configured with builtin:['*'] or explicit child_process allowance.
CVSS v4.0
Score 10.0critical
Affected software
patriksimek
vm2
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vm2 NodeVM sandbox in patriksimek vm2 versions prior to 3.12.1 contains a protection mechanism failure. Specifically, the DANGEROUS_BUILTINS denylist does not include the child_process module, even though other host-spawning modules are blocked. This omission enables attackers to require the child_process module and execute arbitrary commands on the host system if the NodeVM configuration includes builtin:['*'] or explicitly permits child_process. This vulnerability allows sandbox escape and remote code execution on the host.
Potential Impact
Successful exploitation allows an attacker to escape the sandbox environment and execute arbitrary commands on the host system without privileges or user interaction. Given the CVSS 10.0 score and vector indicating network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, availability, and security requirements, this vulnerability is critical and can lead to full system compromise.
Mitigation Recommendations
An official fix is available in patriksimek vm2 version 3.12.1. Users should upgrade to version 3.12.1 or later to remediate this vulnerability. Until upgraded, avoid configurations that include builtin:['*'] or explicitly allow child_process in NodeVM.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-18T11:00:32.756Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aad3d5d55bf5e2cf5100798
Added to database: 09/18/2026, 13:32:13 UTC
Last enriched: 09/18/2026, 13:46:48 UTC
Last updated: 09/19/2026, 01:44:42 UTC
Views: 13
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