Spider-Woman also known as Jessica Drew has superhuman strength , endurance and speed.She is immune to all poisons and drugs and totally immune to radiation. She has venom blasts which can skill normal human beings.She is an excellent investigator and experienced fighter.Source here
image sourceShe has joined Avengers and left the team after Superhuman Registration Act was necessary which she decided to take side with Captain America during the Civil War.
She gained her abilities when she was injected by a untested spider serum which seal her in genetic accelerator.She was once an anti-hero when she was part of Hydra as an assassin.Source here