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Vulnerabilities
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CVE-2026-21712

Updated on 30 Mar 2026

Severity

5.7 Medium severity

Details

CVSS score
5.7
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

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.

Details

Affected product:
AlmaLinux 9.2 ESU , Alpine Linux 3.22 , Alpine Linux 3.23 , Debian 10 , Debian 11 , Debian 12 , Debian 13 , EL 10 , EL 7 , EL 8 , EL 9 , TuxCare 9.6 ESU , Ubuntu 18.04 , Ubuntu 20.04 , Ubuntu 22.04 , Ubuntu 24.04
Affected packages:
nodejs @ 20.20.2 (+60 more)
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.

Fixes