: Developers should disable unused protocols like file:// in their HTTP clients and use allow-lists for specific external domains. AWS and HackerOne CTF write-up - Pawel Rzepa
: Use a "whitelist" of allowed protocols (e.g., only http or https ) and strictly forbid the file:// , gopher:// , or php:// schemes. fetch-url-file-3A-2F-2F-2Froot-2F.aws-2Fconfig
Here's a breakdown: