ColdFusion Debug Mode

Summary
It is possible to see the ColdFusion Debug Information by appending ?Mode=debug at the end of the request (like GET /index.cfm?Mode=debug). 4.5 and 5.0 are definitely concerned (probably in addition older versions). The Debug Information usually contain sensitive data such as Template Path or Server Version.
Solution
Enter a IP (e.g. 127.0.0.1) in the Debug Settings within the ColdFusion Admin.