    function download($disposition=false, $expires=false) {
        $disposition = $disposition ?: 'inline';
        $bk = $this->open();
        if ($bk->sendRedirectUrl($disposition))
            return;
        $ttl = ($expires) ? $expires - Misc::gmtime() : false;
        $this->makeCacheable($ttl);
        $type = $this->getType() ?: 'application/octet-stream';
        Http::download($this->getName(), $type, null, 'inline');
        header('Content-Length: '.$this->getSize());
        $this->sendData(false);
        exit();
    }
The software allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.