onyx

onyx --cves cve-2026-21712

CVE-2026-21712

MEDNode.js
score
<0.1
cvss
6.5
epss
0.3%
published
2026-03-30
kev added
—
first seen

Node.js contains a denial of service caused by assertion failure in native code when url.format() is called with malformed internationalized domain name containing invalid characters, letting attackers crash the Node.js process, exploit requires crafted input.

Timeline

How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.

events2026-03-30 — PublishedP2026-10-21 — Tracked by OnyxTscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 0.3%2026-09-23: epss 0.3%2026-09-24: epss 0.3%2026-09-25: epss 0.3%2026-09-26: epss 0.3%2026-09-27: epss 0.3%2026-09-29: epss 0.3%2026-09-30: epss 0.3%2026-10-01: epss 0.3%2026-10-02: epss 0.3%2026-10-03: epss 0.3%2026-10-04: epss 0.3%2026-10-05: epss 0.3%2026-10-06: epss 0.3%2026-10-07: epss 0.3%2026-10-08: epss 0.3%2026-10-09: epss 0.3%2026-10-10: epss 0.3%2026-10-11: epss 0.3%2026-10-12: epss 0.3%2026-10-13: epss 0.3%2026-10-14: epss 0.3%2026-10-15: epss 0.3%2026-10-16: epss 0.3%2026-10-18: epss 0.3%2026-10-19: epss 0.3%2026-10-20: epss 0.3%2026-10-21: epss 0.3%0.3%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Tracked by Onyx

Weaknesses

CWE-20

References 2