CVE-2026-21712

CWE-1688 documents8 sources
Severity
5.7MEDIUM
EPSS
0.0%
top 97.23%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Nodejs Node
Timeline
PublishedMar 30

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 vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:HExploitability: 2.1 | Impact: 3.6

Affected Packages2 packages

▶Alpinenodejs< 24.14.1-r0
▶CVEListV5nodejs/node24.14.0 — 24.14.0+1

🔴Vulnerability Details

3
GHSA
GHSA-h8r7-m85c-mjhv: A flaw in Node↗2026-03-30
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CVEList
CVE-2026-21712: A flaw in Node↗2026-03-30
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OSV
CVE-2026-21712: A flaw in Node↗2026-03-30
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📋Vendor Advisories

2
Red Hat
Node.js: Node.js: Denial of Service via malformed Internationalized Domain Name processing↗2026-03-30
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Debian
CVE-2026-21712: nodejs - A flaw in Node.js URL processing causes an assertion failure in native code when...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-21712 Impact, Exploitability, and Mitigation Steps | Wiz↗
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💬Community

1
Bugzilla
CVE-2026-21712 Node.js: Node.js: Denial of Service via malformed Internationalized Domain Name processing↗2026-03-30
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CVE-2026-21712 (MEDIUM CVSS 5.7) | A flaw in Node.js URL processing ca | cvebase.io