Parsing CDATA

I have the interface that is triggered by an HTTPS post to the Integration server with incoming message lying in the CDATA section of the XML .

<Envelope version="01.00">

<Sender></Sender>

<Recipient></Recipient>

<Packet>

<Payload>

<![CDATA[

. . <b>Incoming Message</b>

]]>

</Payload>

</Packet>

</Envelope>

Please sort out a way, as to how to parse the incoming data from the CDATA section in XML, to be sent to XI.