Prestashop - Prestashop - CRITICAL - CVE-2026-44212. PrestaShop, an open-source e-commerce platform, is susceptible to a stored Cross-Site Scripting (XSS) vulnerability in the Customer Service view of its back-office. This issue arises due to the improper handling of user input from the public Contact Us form. An unauthenticated attacker can submit a form containing a malicious email address, resulting in the payload being stored in the application's database. When a back-office employee accesses the affected customer thread, the stored payload executes, potentially allowing the attacker to hijack sessions and gain unauthorized access to the back-office environment. This serious security flaw can lead to a complete compromise of the management interface. The vulnerability has been addressed in versions 8.2.6 and 9.1.1.