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CVE-2026-44004— vm2: Host Process OOM DoS via Buffer.alloc (Timeout Bypass)

CVSS 7.5 · High EPSS 0.04% · P12

Possible ATT&CK Techniques 1AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProductVersion RangeStatus
patriksimekvm2< 3.11.0affected
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I. Basic Information for CVE-2026-44004

Vulnerability Information
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Vulnerability Title
vm2: Host Process OOM DoS via Buffer.alloc (Timeout Bypass)
Source: NVD (National Vulnerability Database)
Vulnerability Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, sandboxed code can call Buffer.alloc() with an arbitrary size to allocate memory directly on the host heap. Because Buffer.alloc is a synchronous C++ native call, vm2's timeout option cannot interrupt it. A single request can exhaust host memory and crash the process with a FATAL ERROR: Reached heap limit. This vulnerability is fixed in 3.11.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
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 3.11.0之前版本存在安全漏洞，该漏洞源于沙箱代码可调用Buffer.alloc()分配任意大小内存，由于Buffer.alloc是同步C++原生调用，vm2的超时选项无法中断，导致主机内存耗尽并崩溃。
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 < 3.11.0 -

II. Public POCs for CVE-2026-44004

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III. Intelligence Information for CVE-2026-44004

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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-2026-440089.8 CRITICALvm2: Snabox breakout via `neutralizeArraySpeciesBatch`
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-2026-440006.5 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-770

V. Comments for CVE-2026-44004

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