---
title: "CVE-2026-92937: vm2: GHSA-m283-3h24-438v fix bypass leads to host RCE via call/apply indirection"
url: https://erroneo.us/security/cve/CVE-2026-92937/
description: "CVE-2026-92937 (vm2 (npm)): vm2 3.11.6 is vulnerable to a sandbox escape leading to remote code execution in the host Node.js process. The fix for…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-09-17
date_modified: 2026-10-07
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-92937"
kev: false
cvss: 10
epss: 0.01033
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-92937: vm2: GHSA-m283-3h24-438v fix bypass leads to host RCE via call/apply indirection

**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 1.0% , percentile 63: FIRST’s model estimates a 1.0% chance of exploitation activity in the next 30 days, higher than 63% 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) = 3.11.6, fixed in 3.11.7 . 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 3.11.6 is vulnerable to a sandbox escape leading to remote code execution in the host Node.js process. The fix for GHSA-m283-3h24-438v is incomplete: the bridge gate at lib/bridge.js:1624 identity-checks only the direct call target when deciding whether to rebuild/sanitise a rejected host Promise value. Registering the rejection handler through Function.prototype.call or .apply indirection (e.g., p.then.call(p, undefined, cb)) makes the intercepted target host Function.prototype.call, so the sanitiser never runs and the raw host error reaches sandbox code with its own properties intact. If an embedder exposes a host-realm Promise to the sandbox (an async host function bridged via the sandbox option, or a NodeVM external module's async method) and that Promise rejects with an Error carrying a non-primitive own property referencing a host object (for example err.detail = process), untrusted code in the sandbox obtains a fully functional proxy to that host object and can execute arbitrary commands with the privileges of the host process (e.g., e.detail.mainModule.require('childprocess').execSync(...)). The direct p.then(undefined, cb), bind, and Reflect.apply forms are correctly sanitised. Fixed in vm2 3.11.7.

## Affected packages

- npm `vm2` = 3.11.6 → fixed: 3.11.7

## Affected products (CVE record)

- patriksimek vm2: 3.11.6 < 3.11.7

## 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 poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.03% probability of exploitation activity in the next 30 days; percentile 63.

## Sources

- [GitHub Security Advisory (GHSA-647f-g98j-qq25)](https://github.com/patriksimek/vm2/security/advisories/GHSA-647f-g98j-qq25)
- [GitHub Advisory GHSA-647f-g98j-qq25](https://github.com/advisories/GHSA-647f-g98j-qq25)
- [CVE.org record CVE-2026-92937](https://www.cve.org/CVERecord?id=CVE-2026-92937)
- [NVD entry CVE-2026-92937](https://nvd.nist.gov/vuln/detail/CVE-2026-92937)
- [VulnCheck Advisory: vm2 3.11.6 Remote Code Execution via Promise call/apply](https://www.vulncheck.com/advisories/vm2-3.11.6-remote-code-execution-via-promise-call-apply)
- [github.com](https://github.com/patriksimek/vm2/commit/315786904c416be68ff2517b86fb9d71fa6761db)
- [github.com](https://github.com/patriksimek/vm2/releases/tag/v3.11.7)

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Source page: https://erroneo.us/security/cve/CVE-2026-92937/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt