---
title: "CVE-2026-44006: vm2 has a Sandbox Escape Vulnerability"
url: https://erroneo.us/security/cve/CVE-2026-44006/
description: "CVE-2026-44006 (vm2 (npm)): vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, It is possible to reach BaseHandler.getPrototypeOf, which can be…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-13
date_modified: 2026-09-07
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-44006"
kev: false
cvss: 10
epss: 0.00767
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-44006: vm2 has a Sandbox Escape Vulnerability

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.8% , percentile 55: FIRST’s model estimates a 0.8% chance of exploitation activity in the next 30 days, higher than 55% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes vm2 (npm) <= 3.10.5, fixed in 3.11.0 . Check your lockfile, including transitive dependencies.

## What it is

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, It is possible to reach BaseHandler.getPrototypeOf, which can be used to get arbitrary prototypes. This vulnerability is fixed in 3.11.0.

## Affected packages

- npm `vm2` <= 3.10.5 → fixed: 3.11.0

## Affected products (CVE record)

- patriksimek vm2: < 3.11.0

## Severity

- GitHub_M CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
- redhat-SADP CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 10.0 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.77% probability of exploitation activity in the next 30 days; percentile 55.

## Sources

- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:50850)
- [GitHub Advisory GHSA-qcp4-v2jj-fjx8](https://github.com/advisories/GHSA-qcp4-v2jj-fjx8)
- [CVE.org record CVE-2026-44006](https://www.cve.org/CVERecord?id=CVE-2026-44006)
- [NVD entry CVE-2026-44006](https://nvd.nist.gov/vuln/detail/CVE-2026-44006)
- [github.com](https://github.com/patriksimek/vm2/security/advisories/GHSA-qcp4-v2jj-fjx8)
- [access.redhat.com](https://access.redhat.com/security/cve/CVE-2026-44006)
- [RHBZ#2477200](https://bugzilla.redhat.com/show_bug.cgi?id=2477200)
- [security.access.redhat.com](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44006.json)
- [github.com](https://github.com/patriksimek/vm2/blob/408fc855f1cc1bbc2985b029465ee0e732ada433/lib/bridge.js#L655-L658)
- [github.com](https://github.com/patriksimek/vm2/releases/tag/v3.11.0)

---
Source page: https://erroneo.us/security/cve/CVE-2026-44006/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt