What is SSRF and how could it appear in a full stack app?
PICTURE THIS: STACK VS QUEUE
Simple meaning
Server-side request forgery tricks your API into fetching an attacker-chosen URL, such as cloud metadata.
WHY — Security instead of guessing?
Why interviewers care about Security:
who only read docs from people who shipped.
and tied to Full Stack work.
Name the idea, why it exists, then one short example.
End with when you use it and one common pitfall.
STEPS — What happens step by step?
Before you speak the answer, walk the interviewer through these steps:
- 1Server-side request forgery tricks
your API into fetching an attacker-chosen URL, such as cloud metadata.
- 2It shows up in
preview-link, webhook, or image-download features.
- 3Allowlist protocols and hosts,
and block link-local addresses.
- 4Give an example
One tiny concrete case you can say aloud.
- 5Common mistake
What juniors usually get wrong.
- 6Close
When you pick this over the alternative.
EXAMPLE — See it in action
Here's a short line you can speak, broken into clear beats:
Note: Adapt this scaffold to your own project — keep it under 60–90 seconds.
Key takeaway
Server-side request forgery tricks your API into fetching an attacker-chosen URL, such as cloud metadata. It shows up in preview-link, webhook, or image-download features.