CVE-2026-43999

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, NodeVM's builtin allowlist can be bypassed when the module builtin is allowed (including via the '*' wildcard). The module builtin exposes Node's Module._load(), which loads any module by name directly in the host context, completely bypassing vm2's builtin restriction. This allows sandboxed code to load excluded builtins like child_process and achieve remote code execution. This vulnerability is fixed in 3.11.0.

CVSS v3 9.9 CRITICAL

9.9^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8	Exploit Mitigation Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:50850
https://access.redhat.com/security/cve/CVE-2026-43999
https://bugzilla.redhat.com/show_bug.cgi?id=2477196
https://github.com/patriksimek/vm2/security/advisories/GHSA-947f-4v7f-x2v8	Exploit Mitigation Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43999.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-05-13 18:16

Updated : 2026-09-07 13:19

NVD link : CVE-2026-43999

Mitre link : CVE-2026-43999

CVE.ORG link : CVE-2026-43999

JSON object : View

Products Affected

vm2_project

vm2

CWE

CWE-863

Incorrect Authorization

CWE-829

Inclusion of Functionality from Untrusted Control Sphere

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