: This represents /root/ , the home directory for the system administrator (root user) on Linux-based systems. Why This Vulnerability Exists
: Attackers can read sensitive configuration files, database credentials, and system passwords. -include-..-2F..-2F..-2F..-2Froot-2F
: Accessing the root directory is often the final step in taking total control of a web server. How to Prevent Path Traversal : This represents /root/ , the home directory
If the back-end code takes that page parameter and plugs it directly into a file system call without checking it, an attacker can swap contact.html with our keyword string. The server might then attempt to "include" a sensitive system file, such as /etc/passwd , and display its contents to the attacker. The Risks of Improper File Handling A successful traversal attack can lead to: How to Prevent Path Traversal If the back-end
Securing an application against strings like ..-2F..-2F requires a multi-layered defense strategy:
: Never trust user input. Use a "whitelist" approach—only allow specific, known-good characters (like alphanumeric characters) and reject anything containing dots or slashes.