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Advisory record · GHSA-jf8q-945g-9q4c

vm2: Incomplete nodejs.* symbol filtering lets sandbox override host WebStream state checks

CVSS 8.9 HighEPSS 0.0046 · 40th percentile

Published by the GitHub Advisory Database at 1 Oct 2026, 15:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
vm2npm>=3.11.4, <3.11.73.11.7
Identifiers
GHSA-jf8q-945g-9q4c · CVE-2026-92952
Weakness (CWE)
CWE-669
Tags
Published
1 Oct 2026
Updated
1 Oct 2026

Machine-written summary

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

vm2 versions from 3.11.4 before 3.11.7 expose two registered Node.js stream symbols, nodejs.stream.disturbed and nodejs.stream.errored, from host WebStream prototypes to sandbox code. Sandbox code that can reach a host WebStream object can write these symbols onto it, making stream.Readable.isDisturbed() return false for a stream that was already read. Upgrade to vm2 3.11.7 or later.

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
8.9 High 4.0 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0046, the 40th 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.