If you want the best information and therefore best protection against vulnerabilities in WordPress plugins we provide you that through our service.
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Recently we found that the plugin Contact Form 7 – PayPal Add-on contained a cross-site request forgery (CSRF) vulnerability with the saving of the plugin’s settings that would allow changing the PayPal address that payments through plugin go to. In looking over the developer’s other plugins we found that the PayPal Digital Downloads plugin contains the same vulnerability.
The issue is caused by a lack of a nonce in the form to change the plugin’s settings and a lack of a check to make sure a valid one is included when saving the plugin’s settings. When the plugin’s settings are saved through a request to plugin’s admin page the only thing that is required is that a POST input named “update” is included (in the file /paypal-digital-downloads.php): [Read more]