OWASP JoomScan is an opensource project for detecting Joomla CMS vulnerabilities. Written in Perl.
You can download it from the following link: https://packetstormsecurity.com/files/download/146649/joomscan-0.0.1.tar.gz
Source: https://packetstormsecurity.com/files/146649/JoomScan-0.0.1.html