What is CVE-2026-58042?

CVE-2026-58042 is a medium-severity vulnerability in Node.js Node, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2026-08-04.

How severe is CVE-2026-58042?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Resource exhaustion in Node.js Node

CVE-2026-58042

A flaw in Node.js can cause dns.resolveAny() Aborts the Node.js Process When a DNS Response Contains More Than 256 A Records. Repeated triggering of this condition can lead to denial of service. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.004 (30.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Nodejs Node — versions 26.5.0, 24.18.0, 22.23.1

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

support@hackerone.com

Frequently asked questions

What is CVE-2026-58042?: CVE-2026-58042 is a medium-severity vulnerability in Node.js Node, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2026-08-04.
How severe is CVE-2026-58042?: Medium severity. CVSS v3 base score is 5.9 out of 10.