Simplog 0.9.1 might allow remote attackers to execute arbitrary SQL commands or trigger SQL error messages via invalid (1) pid, (2) blogid, (3) cid, or (4) m parameters to archive.php, or the (5) blogid parameter to blogadmin.php.
http://www.simplog.org/bugs/bug.php?op=show&bugid=55
http://www.securityfocus.com/bid/14897