LFI-LFD-RFI-Path Traversal Local File Inclusion (LFI): The File Inclusion vulnerability allows an attacker to include a file, usually exploiting a dynamic file inclusion mechanisms implemented in the target application. The vulnerability occurs due to the use of user-supplied input without proper validation. It also known as that is the process of including files, that are already locally present on the server, through the exploiting of vulnerable inclusion procedures implemented in the application. Function that could result in LFI: 1-include () 2-inculde _once() 3-require () 4-require_once() Local File Disclosure (LFD): The same as local file inclusion but it enable be to execute file not only read it . Note: Every LFI can be LFD but every LFD not necessary to be LFI. A local file inclusion vuln means it executes the contents it includes, like PHP's include() function. A local file disclosure vuln discloses the contents of the local file. Reconsider your definition of loc...