Input validation vulnerability in WPO365 | Mail Integration for Office 365 / Outlook 1.9.0

The WPO365 | Mail Integration for Office 365 / Outlook plugin for WordPress is not secure in versions up to and including 1.9.0. It is possible for someone to add malicious code to webpages that would be executed if a user clicks on a link. This malicious code could allow the attacker to gain access to information or take control of the user’s computer. It is important to make sure you have the most up-to-date version of this plugin to protect yourself.