CVE-2026-92942Public exploitNetwork attack vectorHinoki check available

Host event-loop hang via FinalizationRegistry timeout bypass

Published Sep 17, 2026 · Updated Sep 18, 2026

Uncontrolled resource consumption in Patrik Simek vm2 3.11.6 and earlier allows remote attackers to hang the host Node.js event loop. FinalizationRegistry cleanup callbacks run after VM#run() returns, beyond doWithTimeout(), so an unbounded callback bypasses configured timeout accounting. Reachability requires an application to execute attacker-controlled JavaScript in a timeout-configured VM; garbage collection triggers the host-process hang.

CVSS severity7.5
High
EPSS probability0.49%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Get started

Summary

What happened

Uncontrolled resource consumption in Patrik Simek vm2 3.11.6 and earlier allows remote attackers to hang the host Node.js event loop. FinalizationRegistry cleanup callbacks run after VM#run() returns, beyond doWithTimeout(), so an unbounded callback bypasses configured timeout accounting. Reachability requires an application to execute attacker-controlled JavaScript in a timeout-configured VM; garbage collection triggers the host-process hang.

The record

CVE
CVE-2026-92942
Published
Sep 17, 2026
Updated
Sep 18, 2026
Vendor
Patrik Simek
Product
vm2
Classifications
CWE-841, CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.11.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Patrik Simek · vm2version=0 <3.11.7

Published CVSS scores

7.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-841Improper Enforcement of Behavioral Workflow
CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Get started to see how Hinoki identifies affected software and validates exploitability in your environment.

Get started