CVE-2026-117551 · Other
NO FIX YET · SEE WHAT TO DO
jDownloads, a download manager extension for Joomla, does not properly validate frontend thumbnail uploads. A user with upload permission can place an executable file on the server and get PHP code to run.
first public Nov 12, 2026 · 1 source
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Sites running the jDownloads extension for Joomla below 4.1.8 where frontend users have upload permission. The sources do not say whether the default configuration allows frontend thumbnail uploads. Sites without jDownloads, or with it already at 4.1.8 or later, are not affected.
Not affected if jdownloads-4.1.8-or-later, no-frontend-upload-permission
Who cares jdownloads, joomla, php, self-hosted
4.1.8.4.1.8: move to 4.1.8 or later.Joomla Extension - jdownloads.com - RCE through file upload in jDownloads < 4.1.8 - Insufficient validation of frontend thumbnail uploads allowed users with upload permission to place executable files on the server. This results in PHP code execution.
This page as .md · .json · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:X
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