void ParamTraits<content::Referrer>::Log(
    const param_type& p, std::string* l) {
  l->append("(");
  LogParam(p.url, l);
  l->append(",");
  LogParam(p.policy, l);
  l->append(")");
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.