A stored cross-site scripting (XSS) vulnerability in PHPJabbers Cinema Booking System v2.0 exists due to unsanitized input in file upload fields (event_img, seat_maps) and seat number configurations (number[new_X] in pjActionCreate). Attackers can inject persistent JavaScript, leading to phishing, malware injection, and session hijacking.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.