Stabilize JWT algorithm confusion audit
Medium Security Basics arena: token validation, allowed algorithms, key handling, and auth boundary tests
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Missing prerequisites: security-easy-jwt-algorithm-confusion
A partner integration accepts JWTs from multiple issuers and a security review found suspicious `alg` headers. 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 token validation, allowed algorithms, key handling, and auth boundary tests in a secure engineering review room while explaining the invariant, safety constraints, and hidden edge cases.
- Demonstrates token validation, allowed algorithms, key handling, and auth boundary tests
- Handles the visible sample and hidden edge cases
- Keeps output deterministic and explainable
- Avoids unsafe dynamic execution
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