Curtain <= 1.0.2 - Admin+ Stored Cross-Site Scripting

The plugin does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks when the unfiltered_html capability is disallowed

Put the following payload in the Heading and Allowed IPs settings of the plugin: "><svg/onload=alert(/XSS/)>, then </textarea><svg/onload=alert(/XSS/)> in the Managers settings