Glossary term
What is SSRF (Server-Side Request Forgery)?
SSRF stands for Server-Side Request Forgery.
In System Design
Tricks a server into requesting internal resources. Example: Fetching cloud metadata credentials.
Learn it properly · System DesignLesson 52: OWASP Top 10 for Backend DevelopersMost breaches don't need a genius hacker — just a missing ownership check, a string-glued SQL query or a default password. The OWASP Top 10 explained for backend developers, with the attack, the fix and a real incident for each, plus the API-specific risks.In Scenario Debugging
Tricking your server into fetching an internal address (like a cloud metadata endpoint) by sending it a crafted URL.
Learn it properly · Scenario DebuggingLesson 13: Security and Auth Scenario BankFourteen “you found a flaw” cases: stored XSS, IDOR, password-reset abuse, open redirects, SSRF, credential stuffing, a leaked key and a hacked third-party script.In Practical Design Problems
Tricking your server into fetching an internal address (like a cloud metadata endpoint) by sending it a crafted URL.
Learn it properly · Practical Design ProblemsLesson 1: Design a URL Shortener (Long URL to Short URL)Making IDs, Base62, collisions, caching for read-heavy traffic, 301 vs 302 and analytics, custom aliases, expiry and stopping abuse.In Security for Developers
An attack where you make a server fetch a URL of your choice, so it reaches internal places you could not reach yourself.
Learn it properly · Security for DevelopersLesson 7: APIs and Servers: SSRF, File Uploads, Rate Limits and MisconfigurationServer-side request forgery, unsafe file uploads, missing rate limits, verbose errors, CORS mistakes and the OWASP API Top 10, each with a small example and a fix.