No fully patched version available. A partial fix is available in versions >= 5.0.6.
minhtuanact discovered and reported this Cross Site Scripting (XSS) vulnerability in WordPress Multi Rating Plugin. This could allow a malicious actor to inject malicious scripts, such as redirects, advertisements, and other HTML payloads into your website which will be executed when guests visit your site. This vulnerability has not been known to be fixed yet.