AVideo Vulnerable to SQL Injection in Subscribe Endpoint via Unsanitized user_id Parameter in subscribe.php

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the Subscribe::save() method in objects/subscribe.php concatenates the $this->users_id property directly into an INSERT SQL query without sanitization or parameterized binding. This property originates from $_POST['user_id'] in both subscribe.json.php and subscribeNotify.json.php. An authenticated attacker can inject arbitrary SQL to extract sensitive data from any database table, including password hashes, API keys, and encryption salts. Commit 36dfae22059fbd66fd34bbc5568a838fc0efd66c contains a patch.