    def test_modify_access_allow(self):
        url = reverse('modify_access', kwargs={'course_id': self.course.id.to_deprecated_string()})
        response = self.client.get(url, {
            'unique_student_identifier': self.other_user.email,
            'rolename': 'staff',
            'action': 'allow',
        })
        self.assertEqual(response.status_code, 200)
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.