Input validation vulnerability in add custom google tag manager 1.0.3

A plugin for WordPress called “add custom google tag manager” has a security issue called Cross-Site Request Forgery, which affects all versions up to 1.0.3. This means that the plugin does not properly check for an important security code, making it possible for hackers to change settings and insert harmful code onto a website. This can happen if they can trick the site administrator into doing something, like clicking on a link.