VULNERABILITY INTELLIGENCE

CVE-2026-21712

CVSS score6.5 MEDIUM
EPSS probability0.33%
CISA KEVNot currently listed
Published2026-03-30
Last modified2026-08-19
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references