WP Simple Table Manager Plugin <= 1.5.6 - Admin+ Stored Cross-Site Scripting

2023-10-1600:00:00

niclo

wordpress

simple table manager plugin

stored xss

csv export

security exploit

admin vulnerability

5.5 Medium

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. Click Simple Table Manager then "Export CSV" after selecting and saving a table in  "Settings" tab. 
2. Put the following in CSV file name then click Save: "><img src=1 onerror=alert(/xss/)>
3. An alert will load, and it will trigger each time an admin navigates to those settings.