BSK Forms Blacklist < 3.7 - Admin+ Stored Cross-Site Scripting

2023-11-2800:00:00

Bob Matyas

bsk forms

blacklist

admin

cross-site scripting

xss

exploit

7.3 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.2%

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. In the plugin settings (ex: "Blacklist"), add a new item with the list name: "><script>alert(1)</script>
2. Save the item and see the XSS.