CVE-2026-47698 patriksimek CVE debrief

Who should care

Node.js developers and administrators using vm2 versions prior to 3.11.6 should assess exposure and apply the fixed version or relevant patches. This includes verifying potential impact, applying the fixed version or relevant patches, and monitoring for potential exploitation attempts. The vulnerability has a CVSS score of 9.8 and is considered critical, allowing sandbox code to execute arbitrary host commands by manipulating the prototype chain of host A

Why it matters

CVE-2026-47698 is a critical vulnerability in vm2 that allows sandbox code to execute arbitrary host commands. Node.js developers and administrators should assess exposure, verify potential impact, and apply the fixed version (3.11.6) or relevant patches.

• Potential for arbitrary host command execution
• Elevation of privileges within the sandbox
• Possible disruption of Node.js services
• Need for verification of affected systems and deployments

Technical summary

The vm2 open source vm/sandbox for Node.js has a critical vulnerability (CVE-2026-47698) that allows sandbox code to execute arbitrary host commands by manipulating the prototype chain of host intrinsics. This issue is fixed in version 3.11.6. The vulnerability has a CVSS score of 9.8 and is considered critical. Node.js developers and administrators using vm2 versions prior to 3.11.6 should assess exposure and apply the fixed version or relevant patches. The CVE record and NVD entry provide details on the vulnerability, its impact, and the fixed version.

Defensive priority

High

Recommended defensive actions

• Assess exposure of Node.js deployments using vm2 versions prior to 3.11.6
• Verify if sandbox code execution can be exploited in your environment
• Apply the fixed version (3.11.6) or relevant patches
• Monitor for potential exploitation attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, its impact, and the fixed version. However, the scope of affected deployments and potential impact on specific systems require further verification.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.