The Announce module in phpWebSite 0.10.0 and earlier allows remote attackers to execute arbitrary PHP code by setting the Image field to reference a PHP file whose name contains a .gif.php extension.
https://exchange.xforce.ibmcloud.com/vulnerabilities/19482
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-0566
http://www.gentoo.org/security/en/glsa/glsa-200503-04.xml
http://securitytracker.com/id?1013298