CVE-2026-21712
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.
CWE
- (none)
Affected
- nodejs / node — v=24.14.0 ≤24.14.0 [affected]; v=25.8.1 ≤25.8.1 [affected]
CVSS
- 3.0 score=5.7 severity=MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
References
- https://nodejs.org/en/blog/vulnerability/march-2026-security-releases
- https://hackerone.com/reports/3546390
Source
cvelistV5-main/cves/2026/21xxx/CVE-2026-21712.json