---
id: CVE-2026-92953
title: >-
  vm2 versions from 3.11.0 before 3.11.8 fail to protect host TypedArray and
  ArrayBuffer prototypes from sandbox mutation
summary: >-
  vm2 versions from 3.11.0 before 3.11.8 fail to protect host TypedArray and
  ArrayBuffer prototypes from sandbox mutation. Attackers can use
  prototype-walking primitives to reach and modify host Uint8Array.prototype,
  %TypedArray%.prototype…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H'
cwe:
  - CWE-913
vendor: patriksimek
product: vm2
affected:
  - vm2 >= 3.11.0 < 3.11.8
published: '2026-09-17'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T20:17:31.113'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92953'
references:
  - url: 'https://github.com/patriksimek/vm2/security/advisories/GHSA-3vgf-8m4q-q4qr'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/vm2-3.11.0-through-3.11.7-prototype-pollution-via-typedarray
    label: disclosure@vulncheck.com
  - url: 'https://github.com/patriksimek/vm2/security/advisories/GHSA-3vgf-8m4q-q4qr'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-18T19:49:26.841413Z'
epss: 0.00343
epssPercentile: 0.27981
ingestedAt: '2026-09-17T14:19:30.989Z'
---

## Overview

vm2 versions from 3.11.0 before 3.11.8 fail to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation. Attackers can use prototype-walking primitives to reach and modify host Uint8Array.prototype, %TypedArray%.prototype, and ArrayBuffer.prototype, causing host-created typed arrays to observe attacker-controlled properties after VM.run() returns.

## Remediation

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