CVE-2026-77990: Joomlaeventmanager.net Jem - Joomla Event Manager Extension For Joomla

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Joomla Extension - joomlaeventmanager.net - Attendee lists readable by any logged-in user in Joomla Event Manager < 5.0.1 - A non-manager can therefore read attendee names, usernames, registration dates and statuses for events they do not manage, including lists belonging to unpublished events.

Affected products

• Joomlaeventmanager.net Jem - Joomla Event Manager Extension For Joomla: version 1.0.0-5.0.0 only

Published 2026-08-27. Last modified 2026-08-28.