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Dheepak ShunmugavelSenior Solutions ArchitectSeptember 10, 2026
OAuth 2.0, OIDC, and SAML: Three Protocols, Two Questions, One Expensive Mistake

OAuth 2.0, OIDC, and SAML: Three Protocols, Two Questions, One Expensive Mistake

Two of these protocols answer the same question. The third answers a completely different one that people keep mistaking for it — and that mistake has a name, a CVE class, and a way of surviving code review. A field guide from someone who has wired all three into production.