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CVE-2026-45411— vm2: Sandbox Breakout Using Async Generator

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 3.11.3之前版本存在安全漏洞，该漏洞源于在异步生成器中使用yield表达式捕获主机异常，当生成器通过return函数关闭时，值被等待且then调用中抛出的异常被运行时捕获并传递给yield迭代器作为下一个值，可能导致攻击者编写代码逃逸VM2沙箱并在主机系统上执行任意命令。

CVSS 9.8 · Critical EPSS 0.90% · P58

Affected Version Matrix 1

VendorProduct Version RangeStatus
patriksimek vm2 < 3.11.3 affected
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I. Basic Information for CVE-2026-45411

Vulnerability Information
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Vulnerability Title
vm2: Sandbox Breakout Using Async Generator
Source: CVE Program / CVE List V5
Vulnerability Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.3, it is possible to catch a host exception using the yield* expression inside an async generator. When the generator is closed using the return function, the value is awaited on and exceptions thrown in the then call will be caught by the runtime and passed to the yield* iterator as the next value. 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 3.11.3.
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 3.11.3之前版本存在安全漏洞，该漏洞源于在异步生成器中使用yield*表达式捕获主机异常，当生成器通过return函数关闭时，值被等待且then调用中抛出的异常被运行时捕获并传递给yield*迭代器作为下一个值，可能导致攻击者编写代码逃逸VM2沙箱并在主机系统上执行任意命令。
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

Vendor Product Affected Versions CPE Subscribe
patriksimek vm2 < 3.11.3 -

II. Public POCs for CVE-2026-45411

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III. Intelligence Information for CVE-2026-45411

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Vendor Advisories for CVE-2026-45411 (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-2026-44009 9.8 CRITICAL vm2: Sandbox Breakout Through Null Proto Exception
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-2026-45411

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