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CVE-2026-44009— vm2: Sandbox Breakout Through Null Proto Exception

Quick assessment

Affected
patriksimek vm2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。

CVSS 9.8 · Critical EPSS 0.81% · P54

Affected Version Matrix 1

VendorProduct Version RangeStatus
patriksimek vm2 < 3.11.2 affected
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I. Basic Information for CVE-2026-44009

Vulnerability Information
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Vulnerability Title
vm2: Sandbox Breakout Through Null Proto Exception
Source: CVE Program / CVE List V5
Vulnerability Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, This vulnerability is fixed in 3.11.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
将资源暴露给错误范围
Source: CVE Program / CVE List V5
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。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
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

Vendor Product Affected Versions CPE Subscribe
patriksimek vm2 < 3.11.2 -

II. Public POCs for CVE-2026-44009

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-44009

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Vendor Advisories for CVE-2026-44009 (1)

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

CVE-2026-43997 10.0 CRITICAL vm2: Sandbox Escape
CVE-2026-44005 10.0 CRITICAL vm2: Sandbox escape
CVE-2026-44006 10.0 CRITICAL vm2: Sandbox Escape
CVE-2026-43999 9.9 CRITICAL vm2: NodeVM builtin allowlist bypass via `module` builtin's `Module._load` allows sandbox
CVE-2026-45411 9.8 CRITICAL vm2: Sandbox Breakout Using Async Generator
CVE-2026-44008 9.8 CRITICAL vm2: Snabox breakout via `neutralizeArraySpeciesBatch`
CVE-2026-44007 9.1 CRITICAL vm2: nesting: true bypasses require: false, allowing sandbox escape to arbitrary OS comman
CVE-2026-44001 8.6 HIGH vm2: Sandbox Escape via Promise Constructor Unhandled Rejection (Process Crash DoS)
CVE-2026-43998 8.5 HIGH vm2: NodeVM require.root bypass via symlink traversal allows sandbox escape
CVE-2026-44004 7.5 HIGH vm2: Host Process OOM DoS via Buffer.alloc (Timeout Bypass)
CVE-2026-44000 6.5 MEDIUM vm2: sandbox boundary bypass via host Promise resolution preserving host object identity
CVE-2026-44002 5.8 MEDIUM vm2: Host File Path Disclosure via Stack Trace Information Leak
CVE-2026-44003 5.3 MEDIUM vm2: 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-2026-44009

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