HL Twitter <= 2014.1.18 - Admin+ Stored XSS via Widget

Description 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 even when the unfiltered_html capability is disallowed (for example in multisite setup)

PoC

1. In the widget area, add the widget “HL Twitter” 2. For the “Title” enter the payload "> 3. Save the widget and view the frontend to see the XSS