Directory Traversal (Local File Inclusion) vulnerability in Tikit (now Advanced) eMarketing platform 6.8.3.0 allows a remote attacker to read arbitrary files and obtain sensitive information via a crafted payload to the filename parameter to the OpenLogFile endpoint.
The PHP application receives input from an upstream component, but it does not restrict or incorrectly restricts the input before its usage in "require," "include," or similar functions.