CVE-2026-47139: CWE-693: Protection Mechanism Failure in patriksimek vm2
vm2 is a Node.js sandbox that prior to version 3.11.4 allowed sandboxed code to bypass network restrictions by accessing internal underscored HTTP modules. Although public network modules could be excluded, internal modules like _http_client and _http_server were not blocked, enabling outbound HTTP requests and listening sockets. This vulnerability is fixed in version 3.11.4.
AI Analysis
Technical Summary
The vm2 sandbox for Node.js versions before 3.11.4 supports excluding public network builtins to block network access. However, internal underscored HTTP modules (_http_client, _http_server) remain accessible, allowing sandboxed code to circumvent network restrictions and perform outbound HTTP requests or open listening sockets. This constitutes a protection mechanism failure (CWE-693). The issue is patched in vm2 version 3.11.4.
Potential Impact
Sandboxed code can bypass intended network access restrictions by leveraging internal Node.js HTTP modules, potentially allowing unauthorized outbound HTTP requests and opening listening HTTP sockets. This compromises the sandbox's isolation guarantees, leading to a high-severity security risk.
Mitigation Recommendations
Upgrade vm2 to version 3.11.4 or later, where this vulnerability is patched. No other mitigation is indicated or required.
CVE-2026-47139: CWE-693: Protection Mechanism Failure in patriksimek vm2
Description
vm2 is a Node.js sandbox that prior to version 3.11.4 allowed sandboxed code to bypass network restrictions by accessing internal underscored HTTP modules. Although public network modules could be excluded, internal modules like _http_client and _http_server were not blocked, enabling outbound HTTP requests and listening sockets. This vulnerability is fixed in version 3.11.4.
CVSS v3.1
Score 8.6high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vm2 sandbox for Node.js versions before 3.11.4 supports excluding public network builtins to block network access. However, internal underscored HTTP modules (_http_client, _http_server) remain accessible, allowing sandboxed code to circumvent network restrictions and perform outbound HTTP requests or open listening sockets. This constitutes a protection mechanism failure (CWE-693). The issue is patched in vm2 version 3.11.4.
Potential Impact
Sandboxed code can bypass intended network access restrictions by leveraging internal Node.js HTTP modules, potentially allowing unauthorized outbound HTTP requests and opening listening HTTP sockets. This compromises the sandbox's isolation guarantees, leading to a high-severity security risk.
Mitigation Recommendations
Upgrade vm2 to version 3.11.4 or later, where this vulnerability is patched. No other mitigation is indicated or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-18T19:50:18.696Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2c1a23e617e2d8347eb1dd
Added to database: 06/12/2026, 14:39:31 UTC
Last enriched: 06/19/2026, 18:28:24 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 74
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