Multiple SQL injection vulnerabilities in Andy's PHP Knowledgebase (Aphpkb) before 0.95.3 allow remote attackers to execute arbitrary SQL commands via the s parameter to (1) a_viewusers.php or (2) keysearch.php; and allow remote authenticated administrators to execute arbitrary SQL commands via the (3) id or (4) start parameter to pending.php, or the (5) aid parameter to a_authordetails.php.  NOTE: some of these details are obtained from third party information.