Input validation vulnerability in Google Maps CP 1.0.43

The Google Maps CP plugin for WordPress is vulnerable to a security issue in versions up to and including 1.0.43. This means that if someone without permission tricks a website administrator into clicking a link, they could submit a feedback form without authorization. This is because the plugin does not use a security measure known as nonce validation when running the feedback_action function through the cp-google-maps-feedback action.