Vergleich admin/modules/forum/attachments.php - 1.8.13 - 1.8.20

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	// Deleting specific attachments from uploads directory
	if(is_array($mybb->input['orphaned_files']))
	{

 
	// Deleting specific attachments from uploads directory
	if(is_array($mybb->input['orphaned_files']))
	{

		/**
		 * @param string $string
		 *
		 * @return string
		 */
		function clean_filename($string)
		{
			return str_replace(array(".."), "", $string);
		}
		$mybb->input['orphaned_files'] = array_map("clean_filename", $mybb->input['orphaned_files']);

 
		foreach($mybb->input['orphaned_files'] as $file)
		{

 
		foreach($mybb->input['orphaned_files'] as $file)
		{

 
			$file = str_replace('..', '', $file);
			$path = MYBB_ROOT.$mybb->settings['uploadspath']."/".$file;
			$real_path = realpath($path);

			if($real_path === false || strpos(str_replace('\\', '/', $real_path), str_replace('\\', '/', realpath(MYBB_ROOT)).'/') !== 0 || $real_path == realpath(MYBB_ROOT.'install/lock'))
			{
				$error_count++;
				continue;
			}


			if(!@unlink(MYBB_ROOT.$mybb->settings['uploadspath']."/".$file))
			{
				$error_count++;

			if(!@unlink(MYBB_ROOT.$mybb->settings['uploadspath']."/".$file))
			{
				$error_count++;