Update the WordPress Social Share Buttons by Supsystic plugin to the latest available version (at least 2.2.4).
Rasi discovered and reported this Cross Site Request Forgery (CSRF) vulnerability in WordPress Social Share Buttons by Supsystic Plugin. This could allow a malicious actor to force higher privileged users to execute unwanted actions under their current authentication. This vulnerability has been fixed in version 2.2.4.