onyx

onyx --cves cve-2026-6019

CVE-2026-6019

MEDPOCPython (CPython)
score
0.4
cvss
6.1
epss
0.2%
published
2026-04-22
kev added
—
first seen

http.cookies.Morsel contains a stored XSS vulnerability caused by insufficient escaping of </script> sequences in js_output(), letting attackers execute arbitrary JavaScript, exploit requires injection of crafted cookie values.

Timeline

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

events2026-04-22 — PublishedP2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score 0.40.4epss2026-09-22: epss 0.2%2026-09-23: epss 0.2%2026-09-24: epss 0.6%2026-09-25: epss 0.6%2026-09-26: epss 0.6%2026-09-27: epss 0.6%2026-09-29: epss 0.6%2026-09-30: epss 0.6%2026-10-01: epss 0.6%2026-10-02: epss 0.6%2026-10-03: epss 0.6%2026-10-04: epss 0.6%2026-10-05: epss 0.6%2026-10-06: epss 0.6%2026-10-07: epss 0.6%2026-10-08: epss 0.6%2026-10-09: epss 0.2%2026-10-10: epss 0.2%2026-10-11: epss 0.2%2026-10-12: epss 0.2%2026-10-13: epss 0.2%2026-10-14: epss 0.2%2026-10-15: epss 0.2%2026-10-16: epss 0.2%2026-10-18: epss 0.2%2026-10-19: epss 0.2%2026-10-20: epss 0.2%2026-10-21: epss 0.2%0.2%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-150 CWE-116

References 6