from flask import Flask, request app = Flask(__name__) @app.route("/code-execution") def code_execution(): code = request.args.get("code") exec(code) # NOT OK eval(code) # NOT OK cmd = compile(code, "", "exec") exec(cmd) # NOT OK @app.route("/safe-code-execution") def code_execution(): foo = 42 bar = 43 obj_name = request.args.get("obj") if obj_name == "foo" or obj_name == "bar": # TODO: Should not alert on this obj = eval(obj_name) # OK print(obj, obj*10)