I have an implementation of the ckeditor in my site. Inside the ckeditor, i define an image, with a src url that looks something like this,
http://mywebsite/images/servicecall?xml=<remotecall><service>getimage</service><param> <image_id>123456</image_id></param><remotecall>
Re: <cke: added to PARAM keyword
You can try to remove the Flash plugin, or do a first replacement of </?param> with something like </?myparam> before feeding the content to the editor and then reverting it when the contents are posted back to the server.