CVE-2026-21712

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://hackerone.com/reports/3546390	Issue Tracking Third Party Advisory
https://nodejs.org/en/blog/vulnerability/march-2026-security-releases	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:nodejs:node.js:::::-:::*
	cpe:2.3:a:nodejs:node.js:::::-:::*

History

No history.

Information

Published : 2026-03-30 16:16

Updated : 2026-08-19 14:05

NVD link : CVE-2026-21712

Mitre link : CVE-2026-21712

CVE.ORG link : CVE-2026-21712

JSON object : View

Products Affected

nodejs

node.js

CWE

CWE-20

Improper Input Validation

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