CVE-2026-21712 — MEDIUM (5.7)

Vulnerability Description

A flaw in Node.js URL processing causes an assertion failure in native code when `url.format()` is called with a malformed internationalized domain name (IDN) containing invalid characters, crashing the Node.js process.

CVSS Score

5.7

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-20

References

FAQ

What is CVE-2026-21712?

CVE-2026-21712 is a vulnerability with a CVSS score of 5.7 (MEDIUM). A flaw in Node.js URL processing causes an assertion failure in native code when `url.format()` is called with a malformed internationalized domain name (IDN) containing invalid characters, crashing t...

How severe is CVE-2026-21712?

CVE-2026-21712 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-21712?

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