Harden SSRF URL filter repair
Hard Security Basics arena: URL parsing, private network blocking, redirect handling, and allowlist policy
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Missing prerequisites: security-easy-ssrf-url-filter
An image proxy fetches user-provided URLs and internal metadata endpoints are showing probe attempts. You are working inside a secure engineering review room, and the arena only clears when the result is safe, deterministic, and explainable.
Learn to apply URL parsing, private network blocking, redirect handling, and allowlist policy in a secure engineering review room while explaining the invariant, safety constraints, and hidden edge cases.
- Demonstrates URL parsing, private network blocking, redirect handling, and allowlist policy
- Handles the visible sample and hidden edge cases
- Keeps output deterministic and explainable
- Avoids unsafe dynamic execution
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Genie Mentor Core
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