To disable Robust Exception Information on a ColdFusion site, you will need to add the following to the top of your Application.cfc file:
<cfset this.enablerobustexception = false />
Additionally, you can keep Robust Exception Information enabled, but restrict it to specific IPs by using the following code instead:
<cfset this.debuggingIPAddresses = "Comma,Separated,list,of,IP,addresses" />
<cfset this.enablerobustexception = true />
After making the required adjustments to the Application.cfc file, you will need to restart your ColdFusion application as shown in this forum post.