Multiple cross-site scripting (XSS) vulnerabilities in FlatnuX CMS (aka Flatnuke3) 2008-12-11 allow remote attackers to inject arbitrary web script or HTML via (1) the mod parameter to the default URI; (2) the foto parameter to photo.php in the 05_Foto module; or (3) the name parameter in an insertrecord action to index.php in the 08_Files module, as demonstrated by injection within a SRC attribute of an IFRAME element.
https://www.exploit-db.com/exploits/7461
https://exchange.xforce.ibmcloud.com/vulnerabilities/47369
https://exchange.xforce.ibmcloud.com/vulnerabilities/47367