CVE-2026-47140: CWE-693: Protection Mechanism Failure in patriksimek vm2
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM blocks several dangerous Node.js builtins such as module, worker_threads, cluster, vm, repl, and inspector. However, the denylist misses process and inspector/promises. Both can be used from sandboxed code to reach host-side execution primitives. This allows sandboxed code to bypass the intended builtin restrictions and execute code in the host process. 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 implemented a denylist to block dangerous builtins like module, worker_threads, cluster, vm, repl, and inspector. However, it failed to block access to the process object and inspector/promises, which could be leveraged by sandboxed code to escape the sandbox and execute arbitrary code in the host environment. This represents a protection mechanism failure (CWE-693). The vulnerability has been patched in vm2 version 3.11.4.
Potential Impact
Sandboxed code could bypass intended builtin restrictions and gain the ability to execute arbitrary code on the host process, leading to full compromise of the host environment. The CVSS score of 10 indicates critical impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade vm2 to version 3.11.4 or later, where this vulnerability has been patched. No other mitigation is indicated or required.
CVE-2026-47140: CWE-693: Protection Mechanism Failure in patriksimek vm2
Description
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM blocks several dangerous Node.js builtins such as module, worker_threads, cluster, vm, repl, and inspector. However, the denylist misses process and inspector/promises. Both can be used from sandboxed code to reach host-side execution primitives. This allows sandboxed code to bypass the intended builtin restrictions and execute code in the host process. This issue has been patched in version 3.11.4.
CVSS v3.1
Score 10.0critical
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 implemented a denylist to block dangerous builtins like module, worker_threads, cluster, vm, repl, and inspector. However, it failed to block access to the process object and inspector/promises, which could be leveraged by sandboxed code to escape the sandbox and execute arbitrary code in the host environment. This represents a protection mechanism failure (CWE-693). The vulnerability has been patched in vm2 version 3.11.4.
Potential Impact
Sandboxed code could bypass intended builtin restrictions and gain the ability to execute arbitrary code on the host process, leading to full compromise of the host environment. The CVSS score of 10 indicates critical impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade vm2 to version 3.11.4 or later, where this vulnerability has been 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: 6a2c1a23e617e2d8347eb1e2
Added to database: 06/12/2026, 14:39:31 UTC
Last enriched: 06/19/2026, 18:23:44 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 53
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