Input validation vulnerability in wpShopGermany IT-RECHT KANZLEI 1.7

The wpShopGermany IT-RECHT KANZLEI plugin for WordPress has a security vulnerability in versions up to and including 1.7. This means that if an attacker has administrator-level access, they can inject malicious scripts into pages which will run when a user visits them. This is only an issue for multi-site installations or where the website has disabled a certain feature called unfiltered_html.