Update the WordPress WP Google Map plugin to the latest available version (at least 1.8.1).
Nguyen Van Khanh discovered and reported this Privilege Escalation vulnerability in WordPress WP Google Map Plugin. This could allow a malicious actor to escalate their low privileged account to something with higher privileges. After this they could take full control of the website. This vulnerability has been fixed in version 1.8.1.
Arbitrary Post Deletion and Plugin's Settings Update via CrossSite Request Forgery (CSRF) vulnerability
Subscriber+ Map Creation/Update/Deletion vulnerability
Authenticated Stored CrossSite Scripting (XSS) vulnerability