Microsoft Advertising Universal Event Tracking < 1.0.4 - Admin+ Stored Cross-Site Scripting

The plugin does not sanitise and escape its settings, allowing high privilege users such as admin to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed. Due to the nature of this plugin, well crafted XSS can also leak into the frontpage.

PoC

Put the following payload in the UET Tag ID settings of the plugin: tagid"};}});alert(“XSS”);