There are 2 repositories under wordpress-bruteforce topic.
CMS Detection and Exploitation suite - Scan WordPress, Joomla, Drupal and over 180 other CMSs
WpCrack is an audit and brute force tool used to remotely test WordPress blogging software
Fastest tool to find username and password brute forcing.
Wordpress password bruteforcer
WordPress XMLRPC BruteForce Tool. With the use of this tool you will be able, given a username and a password dictionary, to bruteforce any given WordPress website through the use of its XML-RPC API.
XML-RPC is a remote procedure call (RPC) protocol which uses XML to encode its calls and HTTP as a transport mechanism