Sandbox Escape Vulnerability in vm2 for Node.js
CVE-2026-44001

8.6HIGH

Key Information:

Vendor

Patriksimek

Status
Vm2
Vendor
CVE Published:
13 May 2026

What is CVE-2026-44001?

The vm2 library, utilized for creating sandboxes in Node.js, has a vulnerability prior to version 3.11.0 that allows sandboxed code to compromise the Node.js host process. This issue arises from a flaw in the handling of unhandled promise rejections. Specifically, the executor function of a Promise can cause the host to crash if it triggers an unhandled rejection. Previous fixes only addressed certain callback scenarios and inadequately managed the executor-to-unhandledRejection pathway, necessitating an upgrade to at least version 3.11.0 to mitigate the risk.

Affected Version(s)

vm2 < 3.11.0

References

https://github.com/patriksimek/vm2/security/advisories/GH...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.