Index: typo3/sysext/impexp/app/index.php
===================================================================
--- typo3/sysext/impexp/app/index.php	(Revision 5451)
+++ typo3/sysext/impexp/app/index.php	(Arbeitskopie)
@@ -433,7 +433,7 @@
 		$inData['pagetree']['maxNumber'] = t3lib_div::intInRange($inData['pagetree']['maxNumber'],1,10000,100);
 		$inData['listCfg']['maxNumber'] = t3lib_div::intInRange($inData['listCfg']['maxNumber'],1,10000,100);
 		$inData['maxFileSize'] = t3lib_div::intInRange($inData['maxFileSize'],1,10000,1000);
-		$inData['filename'] = trim(preg_replace('/[^[:alnum:]./_-]*/','',preg_replace('/\.(t3d|xml)$/','',$inData['filename'])));
+		$inData['filename'] = trim(preg_replace('/[^[:alnum:].\/_-]*/','',preg_replace('/\.(t3d|xml)$/','',$inData['filename'])));
 		if (strlen($inData['filename']))	{
 			$inData['filename'].= $inData['filetype']=='xml' ? '.xml' : '.t3d';
 		}