Can you please install this plugin for CKEditor?
Demo:
http://w8tcha.github.io/CKEditor-CodeMirror-Plugin/demoFramed.html
You can also update the Editor for Security:
http://ckeditor.com/whatsnew
Demo:
http://w8tcha.github.io/CKEditor-CodeMirror-Plugin/demoFramed.html
You can also update the Editor for Security:
http://ckeditor.com/whatsnew