You can read more about the critical security issue here: https://build.prestashop.com/news/critical-security-vulnerability-in-prestashop-modules/?utm_source=emailing&utm_medium=email&utm_campaign=PHPDataSecurityBreach&spMailingID=16800134&spUserID=MjcxMDk0MDU2NzU2S0&spJobID=1800424290&spReportId=MTgwMDQyNDI5MAS2
Download free module, that solves the issue in one click here: vulnerablechecker.zip
See how to use the module in this video: