Hostel < 1.1.5.2 - Admin+ Stored XSS

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. Go to Manage Rooms and click on “Click here to add room”. 2. Update the Room title field as "autofocus onfocus=alert(1)// 3. Go back and select edit the Room that you have created and to trigger the XSS.