Ticket #4136: 4136fix.diff

wp-admin/admin-functions.php

@@ -1948 +1948 @@
                 return $upload_error_handler( $file, __( 'Specified file failed upload test.' ));
 
         // A correct MIME type will pass this test. Override $mimes or use the upload_mimes filter.
-        if ( $test_type && !current_user_can( 'unfiltered_upload' ) ) {
+        if ( $test_type ) {
                 $wp_filetype = wp_check_filetype( $file['name'], $mimes );
 
                 extract( $wp_filetype );
 
-                if ( !$type || !$ext )
+                if ( ( !$type || !$ext ) && !current_user_can( 'unfiltered_upload' ) )
                         return $upload_error_handler( $file, __( 'File type does not meet security guidelines. Try another.' ));
+                
+                if ( !$ext )
+                        $ext = strrchr($file['name'], '.');
         }
 
         // A writable uploads dir will pass this test. Again, there's no point overriding this one.