onyx

onyx --cves cve-2020-13664

CVE-2020-13664

HIGHPOCDrupal
score
<0.1
cvss
8.8
epss
3.0%
published
2021-05-05
kev added
—
first seen

Drupal Core < 8.8.8, < 8.9.1, < 9.0.1 contains an arbitrary PHP code execution caused by directory creation vulnerability in the file system, letting attackers trick administrators into creating malicious directories to attempt remote code execution, exploit requires administrator to visit a malicious site.

Timeline

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

events2021-05-05 — PublishedP2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 3.0%2026-09-23: epss 3.0%2026-09-24: epss 3.0%2026-09-25: epss 3.0%2026-09-26: epss 3.0%2026-09-27: epss 3.0%2026-09-28: epss 3.0%2026-09-29: epss 3.0%2026-09-30: epss 3.0%2026-10-01: epss 3.0%2026-10-02: epss 3.0%2026-10-03: epss 3.0%2026-10-04: epss 3.0%2026-10-05: epss 3.0%2026-10-06: epss 3.0%2026-10-07: epss 3.0%2026-10-08: epss 3.0%2026-10-09: epss 3.0%2026-10-10: epss 3.0%2026-10-11: epss 3.0%2026-10-12: epss 3.0%2026-10-13: epss 3.0%2026-10-14: epss 3.0%2026-10-15: epss 3.0%2026-10-16: epss 3.0%2026-10-18: epss 3.0%2026-10-19: epss 3.0%2026-10-20: epss 3.0%2026-10-21: epss 3.0%3.0%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-77

References 1