Input validation vulnerability in Google Plus Share and +1 Button 1.0

The plugin called Google Plus Share and +1 Button for WordPress has a security issue that makes it vulnerable to a type of attack called Cross-Site Request Forgery. This problem affects all versions of the plugin up to version 1.0. The issue is caused by a missing or incorrect security measure called “nonce validation” on a function that is not known. This means that someone without authorization could potentially perform an unknown action if they can deceive a site administrator into clicking on a link. We do not know exactly what the impact of this problem could be.