onyx

onyx --cves cve-2023-30589

CVE-2023-30589

HIGHPOCNode.js
score
<0.1
cvss
7.5
epss
3.9%
published
2023-07-01
kev added
—
first seen

Node.js v16, v18, and v20 contain an HTTP request smuggling vulnerability caused by the llhttp parser not strictly enforcing CRLF sequence to delimit HTTP requests, letting attackers craft malicious requests, exploit requires sending crafted HTTP headers.

Timeline

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

events2023-07-01 — PublishedP2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 3.9%2026-09-23: epss 3.9%2026-09-24: epss 3.9%2026-09-25: epss 3.9%2026-09-26: epss 3.9%2026-09-27: epss 3.9%2026-09-28: epss 3.9%2026-09-29: epss 3.9%2026-09-30: epss 3.9%2026-10-01: epss 3.9%2026-10-02: epss 3.9%2026-10-03: epss 3.9%2026-10-04: epss 3.9%2026-10-05: epss 3.9%2026-10-06: epss 3.9%2026-10-07: epss 3.9%2026-10-08: epss 3.9%2026-10-09: epss 3.9%2026-10-10: epss 3.9%2026-10-11: epss 3.9%2026-10-12: epss 3.9%2026-10-13: epss 3.9%2026-10-14: epss 3.9%2026-10-15: epss 3.9%2026-10-16: epss 3.9%2026-10-18: epss 3.9%2026-10-19: epss 3.9%2026-10-20: epss 3.9%2026-10-21: epss 3.9%3.9%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Tracked by Onyx
  3. Public PoC

Exploit availability

Public PoC flagged by vulnx; no direct exploit link among the citations.

Weaknesses

NVD-CWE-Other

References 10