ConvertKit < 2.0.5 - Contributor+ Stored XSS

2022-12-2300:00:00

Lana Codes

convertkit

stored xss

contributor+

api key

product id

0.001 Low

EPSS

Percentile

23.5%

JSON

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

Exploit: [convertkit_product product='1' text='XSS' text_color='red" onmouseover="alert(1)"']

Note: The exploit requires registering on the CoverKit website, entering the API key in the settings, adding a product, and entering the CoverKit product id in the shortcode. The product can also be a draft; it does not need to be published.

0.001 Low

EPSS

Percentile

23.5%

JSON

Related for WPEX-ID:5101A979-7A53-40BF-8988-6347EF851EAB