It looks like a superworm but I am not familiar with them. I have ordered from Millbrook farm and they had a poor picture of their superworm so I thought... It is about 3/4 in long.
Oh yes, I get those from time to time. I can't remember what they are called, but they are absolutely safe. I found that those and the fuzzy black ones are awesome for keeping your cricket bin tidy.
There are a bunch of worms that all look similar: Mealworms, superworms, phoenix worms, etc. I'm not sure what kind that is. I've had random worms in my crickets before and I've had no problems with them.