WEBinsta mailing list manager 1.3e allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by install/install3.php and certain other files.

PHP remote file inclusion vulnerability in install3.php in WEBInsta Mailing List Manager 1.3e allows remote attackers to execute arbitrary PHP code via a URL in the cabsolute_path parameter.