Hi, These bugs were published in full-disclosure about 2 weeks ago (CVE : CVE-2006-6945, CVE-2007-0376 and CVE-2007-0382) . One sql injection and one XSS bugs exist in Virtuemart 1.0.7 . These can be exploitable and are not described here . Two new versions have been released in a short time . Also 3 sql injection bugs exist in Letterman 1.2.3 (and maybe other versions): The 'id' parameter in "lm_sendMail()" function is not checked properly before be used in the sql query : File components/com_letterman/letterman.class.php, Line 251 : ** $id = mosGetParam( $_POST, "id", '' ); File components/com_letterman/letterman.class.php, Line 452 : ** $database->setQuery( "UPDATE `#__letterman` SET send=NOW() WHERE id=$id" ); :: $database->query(); Other bugs are in "saveNewsletter()" and "cancelNewsletter()" functions . Again, the 'id' parameter is used without checking . This doesnt work in Joomla 1.0.12 . The original advisory (in Persian) is located at : http://www.hackers.ir/advisories/festival.txt - Omid