Input validation vulnerability in Appsero Helper 1.3.4

The Appsero Helper plugin for WordPress has a security issue that could allow hackers to access sensitive information from the database. This is because the plugin does not properly handle user input, which can be used to add malicious code to existing database queries. This vulnerability exists in versions 1.3.4 and below, and can be exploited by attackers with subscriber-level access or higher.