import flask from flask import Flask, request, make_response app = Flask(__name__) @app.route("/") def hello(): return "Hello World!" from flask.views import MethodView class MyView(MethodView): def get(self, user_id): if user_id is None: # return a list of users pass else: # expose a single user pass the_view = MyView.as_view('my_view') app.add_url_rule('/the/', defaults={'user_id': None}, view_func=the_view, methods=['GET',]) @app.route("/dangerous") def dangerous(): return request.args.get('payload') @app.route("/dangerous-with-cfg-split") def dangerous2(): x = request.form['param0'] if request.method == "POST": return request.form['param1'] return None @app.route('/unsafe') def unsafe(): first_name = request.args.get('name', '') return make_response("Your name is " + first_name) @app.route('/safe') def safe(): first_name = request.args.get('name', '') return make_response("Your name is " + escape(first_name))