CVE-2026-74803: Yootheme.com Zoo Extension For Joomla

Critical severity, CVSS 10.0. EPSS: 0.4% chance of exploitation in the next 30 days.

Joomla Extension - yootheme.com - Unauthenticated arbitrary file upload in Zoo < 4.1.64 - The image element accepts arbitrary files when the client-supplied Content-Type falls within the image MIME group.

Affected products

• Yootheme.com Zoo Extension For Joomla: version 1.0.0-4.1.63 only

Published 2026-08-19. Last modified 2026-08-26.