Callback-url-file-3a-2f-2f-2fhome-2f-2a-2f.aws-2fcredentials Instant
The string you provided is not a standard tool or service, but rather a highly dangerous URL pattern used in web application security testing (and by malicious actors) to exploit Server-Side Request Forgery (SSRF) or Local File Inclusion (LFI) vulnerabilities. Breakdown of the Payload
Understanding the Mysterious Callback URL: /home/*/.aws/credentials callback-url-file-3A-2F-2F-2Fhome-2F-2A-2F.aws-2Fcredentials
Beware the file:// Protocol in OAuth
Most developers know to block http:// and https:// for callback URLs that aren't their own domain. But many forget about file://. The string you provided is not a standard
- Web Server Logs – Someone attempted to exploit your application by injecting this string as a redirect URL or callback parameter.
- A Security Scanner Report (e.g., Burp Suite, OWASP ZAP, Nessus) – The scanner automatically generated this to test for path traversal or SSRF vulnerabilities.
- A Malformed OAuth/Login Configuration – You may have incorrectly configured an OAuth callback URL in a development environment, and the system URL-encoded the path.
- Disable URL fetches of non-network schemes.
- If fetches are required, perform them via a safe proxy that enforces allowlists and timeouts.
