Translate WordPress with GTranslate < 3.0.4 - Admin+ Stored XSS

2023-08-3000:00:00

Pablo Sanchez

wpscan.com

wordpress

gtranslate

vulnerability

stored xss

admin

settings

configuration

intercept

save request

unfiltered_html

multisite

parameters

5.8 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.1%

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). This vulnerability affects multiple parameters.

PoC

1. Go to “Settings > Gtranslate” 2. Make changes to the configuration and intercept the save request 3. Replace in value of incl_langs%5B%5D to `alert(1)