Squiz Matrix Matrix WYSIWYG plugin cross-site scripting vulnerability

Squiz Matrix is an enterprise content management system from Squiz Australia.Matrix WYSIWYG plugins is a WYSIWYG editor plugin used in it. A cross-site scripting vulnerability exists in the Matrix WYSIWYG plugin in Squiz Matrix versions prior to 5.3.6.1 and 5.4.x versions prior to 5.4.1.3. A remo...