CVE-2026-58042 — MEDIUM (5.9)

Vulnerability Description

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**.

CVSS Score

5.9

MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-400

References

https://nodejs.org/en/blog/vulnerability/july-2026-security-releases

FAQ

What is CVE-2026-58042?

CVE-2026-58042 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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. ...

How severe is CVE-2026-58042?

CVE-2026-58042 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-58042?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.