Input validation vulnerability in Events Rich Snippets for Google 1.8

The Events Rich Snippets for Google plugin for WordPress has a security vulnerability in versions up to 1.8. This means that if someone who isn’t authorised to access the website can trick an admin to do something (like click a link), they can update the settings of the website and gain access to more information than they should have. To prevent this from happening, the plugin needs to be updated with the correct security measures.