CVE-2026-44001

patriksimek · vm2

The vm2 sandbox environment is vulnerable to an uncaught exception flaw, which can be leveraged to cause a denial-of-service or potentially escape the sandbox.

Executive summary

An uncaught exception vulnerability in the vm2 sandbox environment allows unauthenticated attackers to cause service instability and potential security bypasses.

Vulnerability

The vulnerability (CWE-248) involves an uncaught exception that can be triggered by an attacker. This flaw allows for escape from the sandbox environment or can lead to a denial-of-service condition affecting the Node.js runtime.

Business impact

A successful exploit could crash the application or allow an attacker to execute code outside of the restricted sandbox, leading to a complete compromise of the host environment. Given the CVSS score of 8.6, this vulnerability poses a severe risk to any application relying on vm2 for secure code execution.

Remediation

Immediate Action: Upgrade the vm2 package to version 3.11.0 or higher.

Proactive Monitoring: Monitor application stability and error logs for recurring uncaught exceptions or unexpected process terminations that may indicate exploitation attempts.

Compensating Controls: If upgrading is not immediately possible, consider moving away from vm2 to more modern, actively maintained isolation alternatives, as the sandbox model itself may be fragile.

Exploitation status

Public Exploit Available: No (exploit_available: false)

Analyst recommendation

Upgrade to version 3.11.0 immediately to resolve the sandbox escape risk. Given the potential for complete host compromise, this update should be treated with the highest urgency in your security maintenance schedule.