PHPGurukul Billing System 1.0 is vulnerable to SQL Injection in the /admin/password-recovery.php endpoint. Specifically, the username and mobileno parameters accepts unvalidated user input, which is then concatenated directly into a backend SQL query.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N