Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-3vgf-8m4q-q4qr

vm2: Default VM can mutate host TypedArray and ArrayBuffer intrinsics after the host-prototype pollution fix

CVSS 9.3 CriticalCriticalEPSS 0.0050 · 43rd percentile

Critical, because:

  • CVSS score 9.3: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 5 Oct 2026, 22:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
vm2npm>=3.11.0, <3.11.83.11.8
Identifiers
GHSA-3vgf-8m4q-q4qr · CVE-2026-92953
Weakness (CWE)
CWE-913 · CWE-1321
Tags
Published
5 Oct 2026
Updated
5 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

vm2 versions >=3.11.0 and <3.11.8 are affected. In a default VM, sandbox code can reach and mutate host typed-array and ArrayBuffer prototypes, so host objects observe properties the sandbox installed after VM.run() returns. An attacker needs only the ability to run JavaScript in the default VM, with no special configuration, and the impact is host intrinsic prototype pollution and a sandbox boundary violation. Upgrade to vm2 3.11.8, which is listed as the fixed version.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.3 Critical 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0050, the 43rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 13:34 UTC First seen by agentprime
  2. 31 Oct 2026, 13:34 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.