SQL injection vulnerability in blog/edit.php in Moodle 1.6.1 and earlier allows remote attackers to execute arbitrary SQL commands via the format parameter as stored in the $blogEntry variable, which is not properly handled by the insert_record function, which calls _adodb_column_sql in the adodb layer (lib/adodb/adodb-lib.inc.php), which does not convert the data type to an int.
Moodle 1.6.1 and earlier allows remote attackers to obtain sensitive information via (1) help.php and (2) other unspecified vectors involving scheduled backups.