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Rich Text field is not working in SFDC sites

Hi I have created a custom object "Referral__c" and within this object there is a custom field  "Physician_s_Signature__c" of TypeRich text


I have created a VF page to take input from user and user suppose to upload a image in this rich text box, when I upload this image in text from SFDC itself it works fine.


But when I used this page within a SFDC site and try to upload a image in that rich text box, it gives me authentication error, please see the details below


Ant help would be highly appreciate


this is how  i used this field in VF page

<apex:inputfield value="{!Referral__c.Physician_s_Signature__c}"/> 



Error message

Timestamp: 26/05/12 10:13:11 PM

Error: CSRF protect string not added to servlet response.

Source File:

Line: 172

Timestamp: 26/05/12 10:13:11 PMError: CSRF protect string not added to servlet response.Source File: 172

Niket SFNiket SF

It may be possible that your field contains some untrusted information "CSFR" is the additional security provided by the salesforce.


because we can add rich text area on Site public page. Please check the (sites>public access settings).