The Joomla extension Phoca Downloads is vulnerable to an authenticated arbitrary file upload that allows registered users uploading executable files and leads to full RCE.
Exploitability
AV:NAC:LAT:PPR:LUI:NVulnerable System
VC:HVI:HVA:HSubsequent System
SC:HSI:HSA:H9/CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:HOther