SQL Injection Vulnerability in Hanchao B2B2C Multi-User Mall System v2.1.3 change_ship_free method

Hanchao B2B2C multi-user mall system is a PHP multi-user mall website system source code developed in PHP + MySQL. A SQL injection vulnerability exists in the Hanchao B2B2C Multi-User Mall System v2.1.3 changeshipfree method. An attacker can exploit this vulnerability to obtain database informati...