A cross-site scripting vulnerability in preview-shortcode-external.php in the Shortcode Ninja plugin 1.4 and earlier for WordPress allows remote attackers to inject arbitrary web script or HTML via the shortcode parameter.
View the template here CVE-2014-4550.yaml
References:
https://wpscan.com/vulnerability/c7c24c7d-5341-43a6-abea-4a50fce9aab0