Icegram Engage <= 3.1.31 - Authenticated (Author+) Stored Cross-Site Scripting

The Icegram Engage – Ultimate WP Popup Builder, Lead Generation, Optins, and CTA plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Campaign settings in all versions up to, and including, 3.1.31 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.