Floating Chat Widget < 3.1.9 - Editor+ Stored XSS

2024-04-0300:00:00

Dmitrii Ignatyev

wpscan.com

floating chat widget}{editor+}{stored xss}{unsanitised settings}{high privilege users}{admin}{unfiltered_html capability}{multisite setup}{poc}{update}{software

5.3 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

8.7%

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)

PoC

1. Go to “Chaty > New Widget” 2. Create a new widget (make sure to select WhatsApp and add a WhatsApp Number) and use Burp to intercept the request 3. For the cht_social_Whatsapp[bg_color] entry, add the payload #000000 4. View the site and see the XSS