    protected function deleteFileInStorage(Attachment $attachment)
    {
        $storage = $this->getStorage();
        $dirPath = $this->adjustPathForStorageDisk(dirname($attachment->path));

        $storage->delete($this->adjustPathForStorageDisk($attachment->path));
        if (count($storage->allFiles($dirPath)) === 0) {
            $storage->deleteDirectory($dirPath);
        }
    }
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.