CVE-2026-21712
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Nodejs Node.js
PublishedMar 30, 2026
First seenMar 30, 2026
Weakness typeCWE-20Improper input validation
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nodejs node.js | 24.0.0 ≤ v ≤ 24.14.0, 25.0.0 ≤ v ≤ 25.8.1 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.