Index: t3lib/class.t3lib_befunc.php
===================================================================
--- t3lib/class.t3lib_befunc.php	(revision 6274)
+++ t3lib/class.t3lib_befunc.php	(working copy)
@@ -2783,7 +2783,7 @@
 			while(list($kk,$vv)=each($fTWHERE_parts))	{
 				if ($kk)	{
 					$fTWHERE_subpart = explode('###',$vv,2);
-					$fTWHERE_parts[$kk]=$TSconfig['_THIS_ROW'][$fTWHERE_subpart[0]].$fTWHERE_subpart[1];
+					$fTWHERE_parts[$kk] = $GLOBALS['TYPO3_DB']->quoteStr($TSconfig['_THIS_ROW'][$fTWHERE_subpart[0]], $foreign_table) . $fTWHERE_subpart[1];
 				}
 			}
 			$fTWHERE = implode('',$fTWHERE_parts);