CVE-2026-21712

A flaw was found in Node.js. This vulnerability allows an attacker to cause a Denial of Service (DoS) by providing a malformed Internationalized Domain Name (IDN) to the url.format() function. When processed, this malformed input triggers an internal error, causing the Node.js application to crash. This can disrupt services and make them unavailable.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.