Input validation vulnerability in Geo Controller 8.5.3

The Geo Controller plugin, used with WordPress websites, is vulnerable to a security issue called Stored Cross-Site Scripting. This issue affects versions up to and including 8.5.2. What it means is that attackers with administrator-level permissions can inject malicious code into pages that will run whenever someone visits the page. This only applies to websites that are using the multi-site feature or have disabled the unfiltered_html feature.