Bubble Menu < 3.0.5 - Admin+ Stored XSS

Description The plugin does not sanitize 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. Click on the “Add new” tab. 2. Select the “Menu” tab. 3. Enter the javascript payload in the “Link” field: javascript:alert(/XSS/); 4. Save it, visit the site, and click on the bubble menu.