Joomla Event Manager vulnerabilities

The Joomla Event Manager extension versions below 5.0.1 contain a privileged remote code execution vulnerability. The administrator can write dangerous file types including PHP, leading to remote code execution.

In the Joomla Event Manager extension before version 5.0.1, attendee lists are readable by any logged-in user. A non-manager can read attendee names, usernames, registration dates, and statuses for events they do not manage, including lists belonging to unpublished events.

In the Joomla Event Manager extension before version 5.0.1, there is a vulnerability allowing cross-user event and venue takeover through forged form fields. A registered user with edit-own rights (the eventowner=1 setting or core.edit.own) can POST another user's record id together with their own id as created_by and take over that record.

In the Joomla Event Manager extension before version 5.0.1, there is a vulnerability allowing unauthenticated article overwrite and force-publish. Any visitor holding their own session token can republish and overwrite an article associated with an event.