SQL injection vulnerability exists in the order_by parameter of the /customers/search endpoint in Alex Tselegidis EasyAppointments <= 1.5.1. The vulnerability arises from unsanitized user input passed to the order_by method of the CodeIgniter Query Builder, enabling attackers to perform time-based queries and schema enumeration. Under certain MySQL configurations, the flaw may lead to remote code execution by writing a PHP shell using INTO OUTFILE.
https://github.com/threatlance-org/security-advisories/blob/main/CVE-2025-50455/poc.py
https://github.com/threatlance-org/security-advisories/blob/main/CVE-2025-50455/advisory.md