/**
 * @name Construction of a cookie using user-supplied input
 * @description Constructing cookies from user input may allow an attacker to perform a Cookie Poisoning attack.
 * @kind path-problem
 * @problem.severity warning
 * @precision high
 * @security-severity 5.0
 * @id py/cookie-injection
 * @tags security
 *       external/cwe/cwe-20
 */

import python
import semmle.python.security.dataflow.CookieInjectionQuery
import CookieInjectionFlow::PathGraph

from CookieInjectionFlow::PathNode source, CookieInjectionFlow::PathNode sink
where CookieInjectionFlow::flowPath(source, sink)
select sink.getNode(), source, sink, "Cookie is constructed from a $@.", source.getNode(),
  "user-supplied input"