This indicates an attack attempt to exploit a SQL Injection vulnerability in Joomla! Component AllVideos Reloaded.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application when handling a craft HTTP request. A remote attacker may be able exploit this this to send a crafted query to execute SQL commands within the context of the application.
Joomla! Component AllVideos Reloaded version 1.2 to version 1.2.7
System Compromise: Remote attackers can access or modify data in the database of the affected application
Apply latest patch or upgrade to the latest version from the vendor.