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CVE-2026-26956— vm2: WASM Sandbox Escape (Node 25 only)

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 3.10.4版本存在安全漏洞。攻击者利用该漏洞可以在VM.run()中获取主机进程对象并运行主机命令。

CVSS 9.8 · Critical EPSS 0.92% · P59

Affected Version Matrix 1

VendorProduct Version RangeStatus
patriksimek vm2 = 3.10.4 affected
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I. Basic Information for CVE-2026-26956

Vulnerability Information
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Vulnerability Title
vm2: WASM Sandbox Escape (Node 25 only)
Source: CVE Program / CVE List V5
Vulnerability Description
vm2 is an open source vm/sandbox for Node.js. In version 3.10.4, vm2 is vulnerable to full sandbox escape with arbitrary code execution. Attacker code inside VM.run() obtains host process object and runs host commands with zero host cooperation. This issue has been patched in version 3.10.5.
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
保护机制失效
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 3.10.4版本存在安全漏洞。攻击者利用该漏洞可以在VM.run()中获取主机进程对象并运行主机命令。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
patriksimek vm2 = 3.10.4 -

II. Public POCs for CVE-2026-26956

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III. Intelligence Information for CVE-2026-26956

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Vendor Advisories for CVE-2026-26956 (1)

Vendor Pages for CVE-2026-26956 (1)

Same Patch Batch · patriksimek · 2026-05-04 · 5 CVEs total

CVE-2026-26332 9.8 CRITICAL vm2: Sandbox Escape
CVE-2026-24781 9.8 CRITICAL vm2: Sandbox Breakout Through Inspect
CVE-2026-24118 9.8 CRITICAL VM2 Sandbox Breakout Through __lookupGetter__
CVE-2026-24120 9.8 CRITICAL vm2: Sandbox Breakout Through Promise Species

IV. Related Vulnerabilities

Same product: vm2
Same vendor: patriksimek
Same weakness: CWE-693

V. Comments for CVE-2026-26956

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