onyx

onyx --cves cve-2019-20041

CVE-2019-20041

CRITWordPress
score
<0.1
cvss
9.8
epss
4.5%
published
2019-12-27
kev added
—
first seen

WordPress before 5.3.1 contains a mishandling of the HTML5 colon named entity in wp_kses_bad_protocol in wp-includes/kses.php, letting attackers bypass input sanitization, exploit requires crafted input containing javascript&colon; substring.

Timeline

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

events2019-12-27 — PublishedP2026-10-21 — Tracked by OnyxTscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 4.7%2026-09-23: epss 4.7%2026-09-24: epss 4.7%2026-09-25: epss 4.7%2026-09-26: epss 4.7%2026-09-27: epss 4.7%2026-09-28: epss 4.7%2026-09-29: epss 4.7%2026-09-30: epss 4.7%2026-10-01: epss 4.7%2026-10-02: epss 4.7%2026-10-03: epss 4.7%2026-10-04: epss 4.7%2026-10-05: epss 4.5%2026-10-06: epss 4.5%2026-10-07: epss 4.5%2026-10-08: epss 4.5%2026-10-09: epss 4.5%2026-10-10: epss 4.5%2026-10-11: epss 4.5%2026-10-12: epss 4.5%2026-10-13: epss 4.5%2026-10-14: epss 4.5%2026-10-15: epss 4.5%2026-10-16: epss 4.5%2026-10-18: epss 4.5%2026-10-19: epss 4.5%2026-10-20: epss 4.5%2026-10-21: epss 4.5%4.5%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Tracked by Onyx

Weaknesses

CWE-20

References 6