Responsive Gallery Grid < 2.3.11 - Admin+ Stored XSS

2024-03-2600:00:00

Dmitrii Ignatyev

106

xss

gallery

admin

stored vulnerability

AI Score

5.7

Confidence

High

EPSS

Percentile

9.0%

JSON

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)

1. Navigate to "RGG Gallery" and scroll down to "General Settings"
2. Change "Class" field to `(" onmouseover='alert(1)')`
3. Save setting and see the XSS when you mouseover the "Class" field