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How to fix Server-Side Request Forgery (SSRF) vulnerabilities in web applications processing remote URLs?

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Version 1 (Edit)

Edited by Ishaan Patel · Aug 24, 2026 4:22 AM

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Title snapshot

How to fix Server-Side Request Forgery (SSRF) vulnerabilities in web applications processing remote URLs?

Summary snapshot
Restricting outbound HTTP requests, whitelisting domains, and blocking internal metadata endpoints (169.254.169.254).
Content snapshot
### SSRF Defense Block outbound server fetches to loopback addresses (`127.0.0.1`, `localhost`) and AWS link-local metadata endpoints (`169.254.169.254`).
Source snapshot

https://developers.google.com/search/docs

Version 1 (Original Post)

Published by Ishaan Patel · Aug 9, 2026 5:37 AM

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Post originally created and published to the Global Hub.

Original Title

How to fix Server-Side Request Forgery (SSRF) vulnerabilities in web applications processing remote URLs?

Original Summary
Restricting outbound HTTP requests, whitelisting domains, and blocking internal metadata endpoints (169.254.169.254).
Original Content
### SSRF Defense Block outbound server fetches to loopback addresses (`127.0.0.1`, `localhost`) and AWS link-local metadata endpoints (`169.254.169.254`).
Original Sources

https://developers.google.com/search/docs