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CVE-2026-47131— vm2: Sandbox Escape

Quick assessment

Affected
patriksimek vm2
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

patriksimek vm2是patriksimek的沙箱。 Patrik Simek vm2 3.11.4之前版本存在处理逻辑错误漏洞，该漏洞源于通过组合Buffer.call.call({}.__lookupGetter__, Buffer, "__proto__")、Buffer.call.call({}.__lookupSetter__, Buffer, "__proto__")和Node.js的ERR_INVALID_ARG_TYPE错误获取主机TypeError构造函数导致沙箱逃逸，可能导致

CVSS 10.0 · Critical EPSS 0.65% · P49

Affected Version Matrix 1

VendorProduct Version RangeStatus
patriksimek vm2 < 3.11.4 affected
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I. Basic Information for CVE-2026-47131

Vulnerability Information
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Vulnerability Title
vm2: Sandbox Escape
Source: CVE Program / CVE List V5
Vulnerability Description
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, by combining Buffer.call.call({}.__lookupGetter__, Buffer, "__proto__"), Buffer.call.call({}.__lookupSetter__, Buffer, "__proto__"), and Node.js's ERR_INVALID_ARG_TYPE Error, the host's TypeError constructor can be obtained, which allows the escape from the sandbox. This allows attackers to run arbitrary code. This issue has been patched in version 3.11.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
动态管理代码资源的控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Patrik Simek vm2 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
patriksimek vm2是patriksimek的沙箱。 Patrik Simek vm2 3.11.4之前版本存在处理逻辑错误漏洞，该漏洞源于通过组合Buffer.call.call({}.__lookupGetter__, Buffer, "__proto__")、Buffer.call.call({}.__lookupSetter__, Buffer, "__proto__")和Node.js的ERR_INVALID_ARG_TYPE错误获取主机TypeError构造函数导致沙箱逃逸，可能导致
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 < 3.11.4 -

II. Public POCs for CVE-2026-47131

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9402 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-47131

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Vendor Advisories for CVE-2026-47131 (1)

Vendor Pages for CVE-2026-47131 (1)

Same Patch Batch · patriksimek · 2026-06-12 · 9 CVEs total

CVE-2026-47140 10.0 CRITICAL vm2: NodeVM builtin denylist bypass via process and inspector/promises allows host code ex
CVE-2026-47208 10.0 CRITICAL vm2: Sandbox Breakout Using Promise Species
CVE-2026-47137 10.0 CRITICAL vm2: GHSA-8hg8-63c5-gwmx patch bypass: nesting:true without explicit require still allows
CVE-2026-47210 9.8 CRITICAL vm2 sandbox escape via JSPI-backed Promise `.finally()` species bypass
CVE-2026-47135 8.7 HIGH vm2: Sandbox escape via unblocked cross-realm Symbol.for keys + missing bridge write-trap
CVE-2026-47139 8.6 HIGH vm2: NodeVM network builtin exclusions bypass via internal _http_client and _http_server
CVE-2026-47209 8.6 HIGH vm2: Bridge Proxy set trap ignores receiver parameter, enabling host object property injec
CVE-2026-47141 vm2: NodeVM observability builtins leak host process and HTTP request data

IV. Related Vulnerabilities

Same product: vm2
Same vendor: patriksimek
Same weakness: CWE-913

V. Comments for CVE-2026-47131

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