onyx

onyx --cves cve-2023-45539

CVE-2023-45539

HIGHPOCHAProxy
score
<0.1
cvss
8.2
epss
1.5%
published
2023-11-28
kev added
—
first seen

HAProxy before 2.8.2 accepts # as part of the URI component, letting remote attackers obtain sensitive information or cause unspecified impact upon misinterpretation of a path_end rule, such as routing index.html#.png to a static server.

Timeline

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

events2023-11-28 — 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

NVD-CWE-noinfo CWE-116

References 3