CVE-2018-17397
SQL Injection exists in the AlphaIndex Dictionaries 1.0 component for Joomla! via the letter parameter.
Date published : 2018-09-27
https://www.exploit-db.com/exploits/45476/
http://packetstormsecurity.com/files/149532/Joomla-AlphaIndex-Dictionaries-1.0-SQL-Injection.html