The input you provided, -page-....-2F-2F....-2F-2F....-2F-2Fetc-2Fpasswd , is a classic example of a Path Traversal
?page=index?page=....//....//....//etc/passwdroot:x:0:0:..., the vulnerability existsInput Validation: Never trust user input. Use "allow-lists" to ensure the application only opens a specific set of predefined files. -page-....-2F-2F....-2F-2F....-2F-2Fetc-2Fpasswd
Use of Secure APIs: Prefer secure APIs and libraries that handle paths securely. Many modern web frameworks offer built-in protections against path traversal. The input you provided, -page-
Introduction