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CVE-2026-21712

Published: 3/30/2026 Last updated: 5/10/2026 Reserved: 1/4/2026

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.

CNA assigner: hackerone (36234546-b8fa-4601-9d6f-f4e334aa8ea1) Requested by: n/a

Metrics

Version Score Severity Vector String
3.0 5.7 Medium CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Opam packages affected (1)

conf-npm

Products affected (0)

No product listed.

References (2)