---
id: CVE-2026-92955
title: >-
  vm2 before 3.11.8 contains a sandbox escape vulnerability in NodeVM that
  allows attackers to access the host __proto__ getter/setter through
  console._stdout and console._stderr
summary: >-
  vm2 before 3.11.8 contains a sandbox escape vulnerability in NodeVM that
  allows attackers to access the host __proto__ getter/setter through
  console._stdout and console._stderr. Attackers can overwrite
  EventEmitter.prototype.emit and tri…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-913
vendor: patriksimek
product: vm2
affected:
  - vm2 < 3.11.8
published: '2026-09-17'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T15:17:01.040'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92955'
references:
  - url: 'https://github.com/patriksimek/vm2/security/advisories/GHSA-88hf-g992-jg85'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/vm2-before-3.11.8-sandbox-escape-via-nodevm
    label: disclosure@vulncheck.com
  - url: 'https://github.com/patriksimek/vm2/security/advisories/GHSA-88hf-g992-jg85'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-17T14:23:07.314615Z'
ingestedAt: '2026-09-17T14:19:30.990Z'
epss: 0.00712
epssPercentile: 0.51549
---

## Overview

vm2 before 3.11.8 contains a sandbox escape vulnerability in NodeVM that allows attackers to access the host __proto__ getter/setter through console._stdout and console._stderr. Attackers can overwrite EventEmitter.prototype.emit and trigger process events to execute code with process context, bypassing code generation restrictions.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.