---
title: "CVE-2026-93605: vm2 contains a sandbox escape vulnerability"
url: https://erroneo.us/security/cve/CVE-2026-93605/
description: "CVE-2026-93605 (vm2 (npm)): vm2 NodeVM versions before 3.12.1 contain a sandbox escape vulnerability where the DANGEROUSBUILTINS denylist omits childprocess…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-09-18
date_modified: 2026-10-07
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-93605"
kev: false
cvss: 10
epss: 0.00726
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-93605: vm2 contains 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?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.7% , percentile 54: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 54% 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) <= 3.12.0, fixed in 3.12.1 . Check your lockfile, including transitive dependencies.
- Editorial verdict: Check exposure. vm2: 22 Critical Sandbox Escapes, Fixed in 3.12.2 — If anything outside your trust boundary can get code into vm2, upgrade to 3.12.2 today and plan to move that code out of process; if vm2 only runs your own code, upgrade on a normal cycle.

## What it is

vm2 NodeVM versions before 3.12.1 contain a sandbox escape vulnerability where the DANGEROUSBUILTINS denylist omits childprocess despite blocking other host-spawning modules. Attackers can require childprocess and execute arbitrary commands on the host system when NodeVM is configured with builtin:[''] or explicit childprocess allowance.

## Affected packages

- npm `vm2` <= 3.12.0 → fixed: 3.12.1

## Affected products (CVE record)

- patriksimek vm2: < 3.12.1

## Severity

- VulnCheck CVSS 4.0: 10 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`
- VulnCheck 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 none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.73% probability of exploitation activity in the next 30 days; percentile 54.

## Sources

- [GitHub Security Advisory (GHSA-pq68-rvw4-xp4r)](https://github.com/patriksimek/vm2/security/advisories/GHSA-pq68-rvw4-xp4r)
- [GitHub Advisory GHSA-pq68-rvw4-xp4r](https://github.com/advisories/GHSA-pq68-rvw4-xp4r)
- [CVE.org record CVE-2026-93605](https://www.cve.org/CVERecord?id=CVE-2026-93605)
- [NVD entry CVE-2026-93605](https://nvd.nist.gov/vuln/detail/CVE-2026-93605)
- [VulnCheck Advisory: vm2 NodeVM before 3.12.1 Remote Code Execution via child_process](https://www.vulncheck.com/advisories/vm2-nodevm-before-3.12.1-remote-code-execution-via-child-process)

---
Source page: https://erroneo.us/security/cve/CVE-2026-93605/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt