Vulnerability DatabaseCVE-2026-44005
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CVE-2026-44005
Published:May 13, 2026
Updated:May 16, 2026
vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.
Affected Packages
vm2 (NPM):
Affected version(s) >=3.9.6 <3.11.0
Fix Suggestion:
Update to version 3.11.0
Related Resources (4)
https://github.com/patriksimek/vm2
https://github.com/patriksimek/vm2/releases/tag/v3.11.0
https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq
https://nvd.nist.gov/vuln/detail/CVE-2026-44005
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CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
10
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CWE-1321
Improper Control of Generation of Code ('Code Injection')
CWE-94
EPSS
Base Score:
0.08