PayPal Pay Now, Buy Now, Donation and Cart Buttons Shortcode <= 1.7 - Admin+ Stored XSS

2024-05-3100:00:00

Bob Matyas

paypal

buttons

xss

vulnerability

update

5.6 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. Go to https://example.com/wp-admin/options-general.php?page=wpdev-paypal-button
2. For the "Business/Product Name" enter the payload `"><script>alert(2)</script>`
3. Save and see the XSS