Input validation vulnerability in Popup – Popup More Popups 2.3.2

n The Popup – Popup More Popups plugin for WordPress has a security issue that could allow hackers to inject malicious code into pages. This vulnerability exists in all versions up to 2.3.2 and is caused by inadequate protection of user input and output. As a result, attackers with high-level permissions could potentially insert harmful scripts into pages, which would run whenever a user visits that page. This only affects WordPress sites with multiple installations or when a specific security setting is disabled.