Donate With Qrcode Cross-Site Request Forgery

The Donate With QRCode WordPress plugin before 1.4.5 does not sanitise or escape its QRCode Image setting, which result into a Stored Cross-Site Scripting (XSS). Furthermore, the plugin also does not have any CSRF and capability checks in place when saving such setting, allowing any authenticated user (as low as subscriber), or unauthenticated user via a CSRF vector to update them and perform such attack. (2021-09-20, CVE-2021-24618)

The absence of Anti-CSRF tokens may lead to a Cross-Site Request Forgery attack that can result in executing a specific application action as another logged in user, e.g. steal their account by changing their email and password or silently adding a new admin user account when executed from the administrator account.

The attacker may copy one of your web application forms, e.g. email/password change form.

The webpage will contain a form with the exact set of fields as the original application but with input values already provided and the submit button replaced with a Javascript code causing auto-submission. When the page is accessed the form will be immediately submitted and page contents replaced with a valid content or a redirect to your original application.

One of your application users who is already logged in can be then tricked to navigate to such malicious page e.g. by clicking a link in a phishing email, and the pre-populated form content will be submitted to your application like it would be submitted by your user.