Paid Memberships Pro < 2.9.9 - Contributor+ Stored XSS via Shortcode

2023-01-2700:00:00

Lana Codes

242

paid memberships pro

stored xss

shortcode

security exploit

EPSS

0.001

Percentile

25.5%

JSON

The plugin does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

1. Insert the following shortcode into a page/post:

[pmpro_checkout_button class='" onmouseover="alert(1)"']

2. Browse the page and hover over the button.

EPSS

0.001

Percentile

25.5%

JSON

Related for WPEX-ID:AE103336-A411-4EBF-A5F0-2F35701E364C