The SiteGround Security WordPress plugin before 1.3.1 does not properly sanitize user input before using it in an SQL query, leading to an authenticated SQL injection issue.
https://www.siteground.com/viewtos/responsible_disclosure_policy?scid=4&lang=en
https://wpscan.com/vulnerability/acf3e369-1290-4b3f-83bf-2209b9dd06e1