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CVE-2026-44007

vm2: nesting: true bypasses require: false, allowing sandbox escape to arbitrary OS command execution

Published: May 13, 2026Updated: May 14, 2026 Sources: CVE List NVD BDUCWE-284
NVD MITRE
9.1CVSSCRITICAL
EPSS Score
0.8%
Top 49.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.1, when a NodeVM is created with nesting: true, sandbox code can unconditionally require('vm2') regardless of the outer VM's require configuration — including require: false. With access to vm2, the sandbox constructs a new inner NodeVM with its own unrestricted require settings and executes arbitrary OS commands on the host. Any application that runs untrusted code inside a NodeVM with nesting: true is fully compromised. This vulnerability is fixed in 3.11.1.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-284

Affected Products

vm2patriksimek
Library
OSS Libraries / npm
vm2vm2 project
Library
OSS Libraries / npm
vm2Node.js FoundationOSS Libraries
patriksimekoss-projectOSS Libraries
vm2 projectoss-projectOSS Librariesaka vm2
node.js foundationoss-projectUSOSS Librariesaka nodejs foundation, node foundation

Exploitability

Official Patch Available

References

https://github.com/patriksimek/vm2/security/advisories/GHSA-8hg8-63c5-gwmx
github.com
http://www.openwall.com/lists/oss-security/2026/05/05/11
openwall.com
https://github.com/patriksimek/vm2/security/advisories/GHSA-8hg8-63c5-gwmx
github.com
and 1 more references View all →

Timeline

Published
May 13, 2026
Last Updated
May 14, 2026

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