The Classima WordPress theme before 2.1.11 and some of its required plugins (Classified Listing before 2.2.14, Classified Listing Pro before 2.0.20, Classified Listing Store & Membership before 1.4.20 and Classima Core before 1.10) do not escape a parameter before outputting it back in attributes, leading to Reflected Cross-Site Scripting
https://wpscan.com/vulnerability/845f44ca-f572-48d7-a19a-89cace0b8993