---
title: "CVE-2026-92953: vm2 - Prototype Pollution"
description: "vm2 versions >= 3.11.0 and < 3.11.8 contain a prototype pollution caused by failure to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation, letting attackers modify host prototypes affecting typed arrays after VM.run(), exploit requires attacker to run code in sandbox."
url: https://panop.io/threat-heartbeat/CVE-2026-92953/
---

# CVE-2026-92953 vm2 - Prototype Pollution

vm2 versions >= 3.11.0 and < 3.11.8 contain a prototype pollution caused by failure to protect host TypedArray and ArrayBuffer prototypes from sandbox mutation, letting attackers modify host prototypes affecting typed arrays after VM.run(), exploit requires attacker to run code in sandbox.

CVSS base score 10.0 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.50% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-92953)

## Details

Type

Prototype Pollution

Impact

Privilege Escalation, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H

Published

17 September 2026

Updated

15 October 2026

Weakness

[CWE-913](https://cwe.mitre.org/data/definitions/913.html)

## Vendor fix

Upgrade to version 3.11.8 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-92953](https://nvd.nist.gov/vuln/detail/CVE-2026-92953)
- [https://github.com/patriksimek/vm2/security/advisories/GHSA-3vgf-8m4q-q4qr](https://github.com/patriksimek/vm2/security/advisories/GHSA-3vgf-8m4q-q4qr)
- [https://www.vulncheck.com/advisories/vm2-3.11.0-through-3.11.7-prototype-pollution-via-typedarray](https://www.vulncheck.com/advisories/vm2-3.11.0-through-3.11.7-prototype-pollution-via-typedarray)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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