Update the WordPress SEO Redirection plugin to the latest available version (at least 9.1).
Vlad Vector discovered and reported this Cross Site Request Forgery (CSRF) vulnerability in WordPress SEO Redirection Plugin. This could allow a malicious actor to force higher privileged users to execute unwanted actions under their current authentication. For example a password change which will then allow the malicious actor to login into the admin account. This vulnerability has been fixed in version 9.1.
CrossSite Request Forgery (CSRF) vulnerability
SQL Injection (SQLi) vulnerability
Authenticated Stored CrossSite Scripting (XSS) vulnerability
Authenticated Persistent CrossSite Scripting (XSS) vulnerability
Authenticated Reflected CrossSite Scripting (XSS) vulnerability