comment_delete_cgi.php in Simple PHP Blog allows remote attackers to delete arbitrary files via the comment parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/22096
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-2788
http://www.securityfocus.com/bid/14681
http://www.ftusecurity.com/pub/sphpblog_vulns