onyx

onyx --cves cve-2023-23936

CVE-2023-23936

MEDPOCNode.js
score
<0.1
cvss
6.5
epss
1.1%
published
2023-02-16
kev added
—
first seen

Undici < 5.19.1 contains a CRLF injection caused by lack of validation of the 'host' HTTP header, letting attackers inject malicious headers, exploit requires passing unsanitized header values.

Timeline

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

events2023-02-16 — PublishedP2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 1.1%2026-09-23: epss 1.1%2026-09-24: epss 1.1%2026-09-25: epss 1.1%2026-09-26: epss 1.1%2026-09-27: epss 1.1%2026-09-28: epss 1.1%2026-09-29: epss 1.1%2026-09-30: epss 1.1%2026-10-01: epss 1.1%2026-10-02: epss 1.1%2026-10-03: epss 1.1%2026-10-04: epss 1.1%2026-10-05: epss 1.1%2026-10-06: epss 1.1%2026-10-07: epss 1.1%2026-10-08: epss 1.1%2026-10-09: epss 1.1%2026-10-10: epss 1.1%2026-10-11: epss 1.1%2026-10-12: epss 1.1%2026-10-13: epss 1.1%2026-10-14: epss 1.1%2026-10-15: epss 1.1%2026-10-16: epss 1.1%2026-10-18: epss 1.1%2026-10-19: epss 1.1%2026-10-20: epss 1.1%2026-10-21: epss 1.1%1.1%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

CWE-93 CWE-74

References 4