PrestaShop is an open source e-commerce web application. Prior to version 8.1.1, it is possible to delete a file from the server by using the Attachments controller and the Attachments API. Version 8.1.1 contains a patch for this issue. There are no known workarounds.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.