onyx

onyx --cves cve-2013-4547

CVE-2013-4547

HIGHPOCnginx
score
<0.1
cvss
7.5
epss
67.7%
published
2013-11-23
kev added
—
first seen

nginx 0.8.41 through 1.4.3 and 1.5.x before 1.5.7 contain a restriction bypass caused by unescaped space character in URI, letting remote attackers bypass intended restrictions, exploit requires sending a crafted URI with unescaped space.

Timeline

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

events2013-11-23 — PublishedP2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 67.7%2026-09-23: epss 67.7%2026-09-24: epss 67.7%2026-09-25: epss 67.7%2026-09-26: epss 67.7%2026-09-27: epss 67.7%2026-09-28: epss 67.7%2026-09-29: epss 67.7%2026-09-30: epss 67.7%2026-10-01: epss 67.7%2026-10-02: epss 67.7%2026-10-03: epss 67.7%2026-10-04: epss 67.7%2026-10-05: epss 67.7%2026-10-06: epss 67.7%2026-10-07: epss 67.7%2026-10-08: epss 67.7%2026-10-09: epss 67.7%2026-10-10: epss 67.7%2026-10-11: epss 67.7%2026-10-12: epss 67.7%2026-10-13: epss 67.7%2026-10-14: epss 67.7%2026-10-15: epss 67.7%2026-10-16: epss 67.7%2026-10-18: epss 67.7%2026-10-19: epss 67.7%2026-10-20: epss 67.7%2026-10-21: epss 67.7%67.7%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-116

References 8