I reckon it would be possible for symbiote to take control of a wraith.
Simply as it happens at the brain stem leve, if one got the drop on a wraith it would win, it would burrow in and control the wraiths mental powers so it couldnt use them against it.
One good side effect of this is we have goa'uld poison that kills the host bodies

release the goa'uld into the hives then the poison to kill em all off

The river tells no lies, yet standing at its shores the dishonest man still hears them
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