onyx

onyx --cves cve-2023-29406

CVE-2023-29406

MEDPOCGo
score
<0.1
cvss
6.5
epss
1.5%
published
2023-07-11
kev added
—
first seen

The HTTP/1 client does not fully validate the contents of the Host header, letting maliciously crafted Host headers inject headers or requests, exploit requires sending malformed Host headers.

Timeline

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

events2023-07-11 — PublishedP2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 1.5%2026-09-23: epss 1.5%2026-09-24: epss 1.5%2026-09-25: epss 1.5%2026-09-26: epss 1.5%2026-09-27: epss 1.5%2026-09-28: epss 1.5%2026-09-29: epss 1.5%2026-09-30: epss 1.5%2026-10-01: epss 1.5%2026-10-02: epss 1.5%2026-10-03: epss 1.5%2026-10-04: epss 1.5%2026-10-05: epss 1.5%2026-10-06: epss 1.5%2026-10-07: epss 1.5%2026-10-08: epss 1.5%2026-10-09: epss 1.5%2026-10-10: epss 1.5%2026-10-11: epss 1.5%2026-10-12: epss 1.5%2026-10-13: epss 1.5%2026-10-14: epss 1.5%2026-10-15: epss 1.5%2026-10-16: epss 1.5%2026-10-18: epss 1.5%2026-10-19: epss 1.5%2026-10-20: epss 1.5%2026-10-21: epss 1.5%1.5%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-436

References 6