CVE-2026-47141: CWE-668: Exposure of Resource to Wrong Sphere in patriksimek vm2
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The diagnostics_channel, async_hooks, and perf_hooks builtins are not blocked by the dangerous builtin denylist. These modules are process-wide, not sandbox-local. Sandboxed code can use them to observe host application data across the vm2 boundary. This issue has been patched in version 3.11.4.
AI Analysis
Technical Summary
The vm2 Node.js sandbox prior to version 3.11.4 exposes process-wide observability built-in modules (diagnostics_channel, async_hooks, perf_hooks) to sandboxed code when allowed through require.builtin. These modules are not sandbox-local but process-wide, enabling sandboxed code to observe host application data outside the sandbox boundary. This constitutes an exposure of resource to the wrong sphere (CWE-668). The issue has been addressed by patching in vm2 version 3.11.4.
Potential Impact
Sandboxed code can access process-wide observability modules that allow it to monitor host application data beyond the sandbox boundary. This exposure can lead to unintended information disclosure from the host environment to the sandboxed code. The CVSS 4.0 base score is 6.9 (medium severity), reflecting network attack vector, low complexity, no privileges or user interaction required, and low impact on confidentiality.
Mitigation Recommendations
Upgrade vm2 to version 3.11.4 or later where this vulnerability is patched. No other mitigation is indicated or required as the fix is available.
CVE-2026-47141: CWE-668: Exposure of Resource to Wrong Sphere in patriksimek vm2
Description
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The diagnostics_channel, async_hooks, and perf_hooks builtins are not blocked by the dangerous builtin denylist. These modules are process-wide, not sandbox-local. Sandboxed code can use them to observe host application data across the vm2 boundary. This issue has been patched in version 3.11.4.
CVSS v4.0
Score 6.9medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vm2 Node.js sandbox prior to version 3.11.4 exposes process-wide observability built-in modules (diagnostics_channel, async_hooks, perf_hooks) to sandboxed code when allowed through require.builtin. These modules are not sandbox-local but process-wide, enabling sandboxed code to observe host application data outside the sandbox boundary. This constitutes an exposure of resource to the wrong sphere (CWE-668). The issue has been addressed by patching in vm2 version 3.11.4.
Potential Impact
Sandboxed code can access process-wide observability modules that allow it to monitor host application data beyond the sandbox boundary. This exposure can lead to unintended information disclosure from the host environment to the sandboxed code. The CVSS 4.0 base score is 6.9 (medium severity), reflecting network attack vector, low complexity, no privileges or user interaction required, and low impact on confidentiality.
Mitigation Recommendations
Upgrade vm2 to version 3.11.4 or later where this vulnerability is patched. No other mitigation is indicated or required as the fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-18T19:50:18.696Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2c1a23e617e2d8347eb1e7
Added to database: 06/12/2026, 14:39:31 UTC
Last enriched: 06/19/2026, 18:24:39 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 70
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