CVE-2026-21712

Published: Mar 30, 2026

Modified: May 10, 2026

PUBLISHED

CVSS v3.0

5.7

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.

Vendor	Product	Versions
nodejs	node	affected `24.14.0 - <= 24.14.0` affected `25.8.1 - <= 25.8.1`

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

https://nodejs.org/en/blog/vulnerability/march-2026-security-releases

https://hackerone.com/reports/3546390

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CVE-2026-21712

Description

Affected Products

CVSS v3.0 Details

References