Index: modules/filter/filter.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/filter/filter.module,v
retrieving revision 1.243
diff -u -p -r1.243 filter.module
--- modules/filter/filter.module	8 Mar 2009 21:25:18 -0000	1.243
+++ modules/filter/filter.module	12 Mar 2009 22:41:51 -0000
@@ -823,6 +823,7 @@ function _filter_url_parse_full_links($m
   $match[2] = decode_entities($match[2]);
   $caption = check_plain(_filter_url_trim($match[2]));
   $match[2] = check_url($match[2]);
+  $match[2] = strip_tags($match[2]);
   return $match[1] . '<a href="' . $match[2] . '" title="' . $match[2] . '">' . $caption . '</a>' . $match[5];
 }