Ultimate POS Stored XSS via First Name Field in Leave Notifications

Ultimate POS (Stock Management & Point of Sale) contains a stored cross-site scripting vulnerability that allows low-privileged authenticated attackers to inject arbitrary HTML and script markup by setting a malicious payload in the user first-name field during account creation. Attackers with a low-privileged role such as Cashier can submit a leave request through the HRM/Leave module, causing the unsanitized first-name markup to execute in the browser session of any higher-privileged user who views the leave-application notification pane, enabling cross-user session compromise within the admin origin.

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A Stored Cross Site Scripting vulnerability has been found in UltimatePOS by UltimateFosters. This vulnerability is due to the lack of proper validation of user inputs via ‘/products/<PRODUCT_ID>/edit’, affecting to ‘name’ parameter via POST. The vulnerability could allow a remote attacker to send a specially crafted query to an authenticated user and steal his/her session cookies details.

A cross-site scripting (XSS) vulnerability exists in the administrative interface of ultimatefosters UltimatePOS 4.8 where input submitted in the purchase functionality is reflected without proper escaping in the admin log panel page in the 'reference No.' field. This flaw allows an authenticated attacker to execute arbitrary JavaScript in the context of an administrator's browser session, which could lead to session hijacking or other malicious actions.

UltimatePOS 2.5 allows users to upload arbitrary files, which leads to remote command execution by posting to a /products URI with PHP code in a .php file with the image/jpeg content type.