The Spiritual Gifts Survey (and optional S.H.A.P.E survey) WordPress plugin through 0.9.10 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against only unauthenticated users.
https://wpscan.com/vulnerability/3c1e21e1-32f2-4a20-9262-80e1cdab534d/