---
id: GHSA-mgj2-jqjq-q8gg
title: >-
  Duplicate Advisory: vm2: Host-returned Promise rejection can bypass vm2's
  unhandled-rejection hardening and terminate the host process
summary: >-
  Duplicate Advisory: vm2: Host-returned Promise rejection can bypass vm2's
  unhandled-rejection hardening and terminate the host process
severity: critical
cvss: 8.6
cwe:
  - CWE-248
vendor: vm2
product: vm2
ecosystem: npm
affected:
  - 'vm2 >= 3.10.0, <= 3.11.7'
published: '2026-09-17'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T22:45:33Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-mgj2-jqjq-q8gg'
references:
  - url: 'https://github.com/patriksimek/vm2/security/advisories/GHSA-gjq8-xm47-88rc'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92954'
  - url: >-
      https://www.vulncheck.com/advisories/vm2-3.10.0-through-3.11.5-denial-of-service-via-host-promise
  - url: 'https://github.com/advisories/GHSA-mgj2-jqjq-q8gg'
tags:
  - ghsa
  - npm
ingestedAt: '2026-10-05T23:36:21.178Z'
---

## Overview

## Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-gjq8-xm47-88rc. This link is maintained to preserve external references.

## Original Description
vm2 is a sandbox library for running untrusted JavaScript in Node.js. In versions >= 3.10.0 and <= 3.11.7, Promises returned from the host realm into the sandbox are not marked as handled at the bridge boundary; only Promises created inside the sandbox are wrapped with a rejection-swallowing handler (lib/setup-sandbox.js), and the bridge only installs host-side rejection sanitizers when sandbox code calls .then/.catch/.finally. As a result, code running in the sandbox can invoke a host function that returns a rejected Promise (for example events.once() exposed via the NodeVM events builtin, or any embedder-provided Promise-returning API) and simply ignore the return value, leaving the host Promise unhandled so that Node.js's default unhandled-rejection behavior terminates the host process. This is an incomplete fix of GHSA-hw58-p9xv-2mjh. The issue is fixed in version 3.11.8.

## Affected packages

- `vm2 >= 3.10.0, <= 3.11.7`

## Remediation

Refer to the advisory for the patched release.