protocol uses a specific syntax to identify local paths. In many systems, a local file is addressed as file:///path/to/file
If you clarify (log file, API request, CTF challenge, etc.), I can tailor the content exactly to that context. curl-url-file-3A-2F-2F-2F
If you're providing a URL for someone to review or use, it needs to be in a standard, recognizable format. protocol uses a specific syntax to identify local paths
To truly understand the keyword, you must experiment (ethically, on your own system). you must experiment (ethically
curl -X POST -d "url=file%3A%2F%2F%2Fetc%2Fpasswd" https://vulnerable-app/fetch
curl-url-file-3A-2F-2F-2F
Checking how a server handles various HTTP headers and file transfers.