"YES" Renesmee does have vampire venom like the other members of the Cullen Coven.
The proof is in the 'Breaking Dawn' book of the Twilight Saga when Bella's father Charlie visits to meet Renesmee, Bella warns her that she can NOT bite him or drink his blood; thus forcing her to not breathe.
Basically a vampire has venom. So if the vampire bites someone, venom traces through their veins, turning that person into a vampire.
CONCLUSION: Yes, Renesmee has venom, as well.