Input validation vulnerability in Add Google +1 (Plus one) social share Button 1.0.0

The plugin called “Add Google +1 (Plus one) social share Button” for WordPress has a security issue that can affect all versions up to 1.0.0. This is because the page where the plugin is located does not properly check for a security code, making it possible for attackers to change settings and add harmful code to a website. They can do this by tricking a website administrator into clicking on a link.