PrestaShop is an open source e-commerce web application. Prior to version 8.1.1, in the back office, files can be compromised using path traversal by replaying the import file deletion query with a specified file path that uses the traversal path. Version 8.1.1 contains a patch for this issue. There are no known workarounds.
https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-m9r4-3fg7-pqm2
https://github.com/PrestaShop/PrestaShop/commit/c7c9a5110421bb2856f4d312ecce192d079b5ec7