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CVE-2026-44008— vm2: Snabox breakout via `neutralizeArraySpeciesBatch`

CVSS 9.8 · Critical EPSS 0.06% · P19

Affected Version Matrix 1

VendorProductVersion RangeStatus
patriksimekvm2< 3.11.2affected
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I. Basic Information for CVE-2026-44008

Vulnerability Information
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Vulnerability Title
vm2: Snabox breakout via `neutralizeArraySpeciesBatch`
Source: NVD (National Vulnerability Database)
Vulnerability Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, the new method neutralizeArraySpeciesBatch works with objects from the other side but can call into this side via getter on the array prototype exposing objects of the wrong side into the sandbox. This can be used to get host objects and get the host Function object. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This vulnerability is fixed in 3.11.2.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
将资源暴露给错误范围
Source: NVD (National Vulnerability Database)
Vulnerability Title
vm2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
vm2是捷克Patrik Simek个人开发者的一个 Node.js 的高级虚拟机/沙盒。以使用列入白名单的 Node 内置模块运行不受信任的代码。 vm2 3.11.2之前版本存在安全漏洞，该漏洞源于neutralizeArraySpeciesBatch方法可通过数组原型上的getter暴露错误侧的对象，导致攻击者获取主机对象和主机Function对象，从而逃逸VM2沙箱并执行任意命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
patriksimekvm2 < 3.11.2 -

II. Public POCs for CVE-2026-44008

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III. Intelligence Information for CVE-2026-44008

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Same Patch Batch · patriksimek · 2026-05-13 · 14 CVEs total

CVE-2026-4399710.0 CRITICALvm2: Sandbox Escape
CVE-2026-4400510.0 CRITICALvm2: Sandbox escape
CVE-2026-4400610.0 CRITICALvm2: Sandbox Escape
CVE-2026-439999.9 CRITICALvm2: NodeVM builtin allowlist bypass via `module` builtin's `Module._load` allows sandbox
CVE-2026-454119.8 CRITICALvm2: Sandbox Breakout Using Async Generator
CVE-2026-440099.8 CRITICALvm2: Sandbox Breakout Through Null Proto Exception
CVE-2026-440079.1 CRITICALvm2: nesting: true bypasses require: false, allowing sandbox escape to arbitrary OS comman
CVE-2026-440018.6 HIGHvm2: Sandbox Escape via Promise Constructor Unhandled Rejection (Process Crash DoS)
CVE-2026-439988.5 HIGHvm2: NodeVM require.root bypass via symlink traversal allows sandbox escape
CVE-2026-440047.5 HIGHvm2: Host Process OOM DoS via Buffer.alloc (Timeout Bypass)
CVE-2026-440006.5 MEDIUMvm2: sandbox boundary bypass via host Promise resolution preserving host object identity
CVE-2026-440025.8 MEDIUMvm2: Host File Path Disclosure via Stack Trace Information Leak
CVE-2026-440035.3 MEDIUMvm2: Transformer Fast-Path Bypass Exposes Internal State Variable

IV. Related Vulnerabilities

Same product: vm2
Same vendor: patriksimek
Same weakness: CWE-668

V. Comments for CVE-2026-44008

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