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nodejs node: A flaw in Node.js URL processing causes an assertion failure in native code when `url.format()` is called with a malform

Node.js · CVE-2026-21712
0 news outlets0 CERTs and agencies0 researchers

What is it?

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.

Evidence

No coverage recorded yet.

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
5.7
EPSS
0.3%
First seen
8 h ago
Status
corroborated

All Node.js vulnerabilities