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Enrico Marcolini, Claudio MarchesiniWPVDB-ID:9997FE8D-8027-4AE0-9885-A1F5565F2D1A

HistoryNov 13, 2023 - 12:00 a.m.

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

2023-11-1300:00:00

Enrico Marcolini, Claudio Marchesini

wpscan.com

bsk contact form 7 blacklist

cross-site scripting

reflected

security vulnerability

wordpress

6.3 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

PoC

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+<script>alert(1)%3B<%2Fscript>