The Contest Gallery WordPress plugin before 19.1.5, Contest Gallery Pro WordPress plugin before 19.1.5 do not escape the option_id POST parameter before concatenating it to an SQL query in edit-options.php. This may allow malicious users with at least author privilege to leak sensitive information from the site's database.
https://wpscan.com/vulnerability/4b058966-0859-42ed-a796-b6c6cb08a9fc