Macromedia ColdFusion MX before 6.1 does not restrict the size of error messages, which allows remote attackers to cause a denial of service (memory consumption and crash) by sending repeated GET or POST requests that trigger error messages that use long strings of data.

Cross-site scripting (XSS) vulnerability in the validation feature in Macromedia ColdFusion 5 and earlier allows remote attackers to inject arbitrary web script or HTML via a "required" field when the associated normal field is missing or empty, which is not sanitized before being presented in an error message.