WordPress Calls to Action Plugin <= 2.4.3 - Reflected Cross Site Scripting
Calls to Action
This plugin is prone to a cross site scripting vulnerability, because "open-tab" HTTP GET parameter is not properly sanitised. Remote attackers can trick a logged-in administrator to open a specially crafted link and execute arbitrary HTML and script code.
Update the plugin.
Type XSS (Cross Site Scripting) OWASP Top 10 A3: Cross Site Scripting (XSS)