setup/controllers/welcome.php in MODX Revolution 2.5.4-pl and earlier allows remote attackers to execute arbitrary PHP code via the config_key parameter to the setup/index.php?action=welcome URI.Referenceshttp://www.securityfocus.com/bid/97228https://mazinahmed.net/services/public-reports/ModX%20-%20Responsible%20Disclosure%20-%20January%202017.pdf
