CVE-2026-21712

Advisory lineage Upstream: 0 Downstream: 11
Awaiting Analysis
Published: 30 Mar 2026, 15:13
Last modified:10 May 2026, 13:16

Vulnerability Summary

Overall Risk (default)
low
23/100
CVSS Score
5.7 MEDIUM
v3.0 (cve.org)
EPSS Score
0.33% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

30 Mar 2026, 15:13
Published
Vulnerability first disclosed
10 May 2026, 13:16
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•MEDIUM•Score: 5.7CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.33%• Percentile: 24%

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

  • nodejs•node

    24.14.0 | 25.8.1

References (2)