The ColdFusion CFCRYPT program for encrypting CFML templates has weak encryption, allowing attackers to decrypt the templates.
https://exchange.xforce.ibmcloud.com/vulnerabilities/2208
https://euvd.enisa.europa.eu/vulnerability/EUVD-1999-0738
http://www.allaire.com/handlers/index.cfm?ID=10969&Method=Full