如果需要前后端同时验证的话，像这样修改：

public function validate($input, $caseSensitive)
{
    $code = $this->getVerifyCode(false);
    $valid = $caseSensitive ? ($input === $code) : strcasecmp($input, $code) === 0;
    $session = Yii::$app->session;
    $session->open();
    $name = $this->getSessionKey() . 'count';
    $session->set($name ,$session->get($name) + 1);
    if ($valid || $session->get($name) > $this->testLimit && $this->testLimit > 0) {
        $this->getVerifyCode(true);
    }

    return $valid;
}

RBAC有问题，存在垂直越权

布特斯窜坡不是自带么

RBAC有问题，存在垂直越权