Custom User Profile Fields for User Registration & Member Frontend Profiles with Paid Memberships Pro < 1.8.1 - Contributor+ Stored XSS via Shortcode

2023-01-0600:00:00

Lana Codes

user registration

member profiles

paid memberships pro

stored xss

shortcode

exploit

wordpress plugin

0.001 Low

EPSS

Percentile

23.5%

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.

Exploit shortcode:

[pmpro_signup button='XSS" onmouseover="alert(1)"']

Dependency: Paid Memberships Pro plugin - https://wordpress.org/plugins/paid-memberships-pro

0.001 Low

EPSS

Percentile

23.5%

JSON

Related for WPEX-ID:872FC8E6-4035-4E5A-9F30-16C482C48C7C