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OAuth bugs are dangerous because they look secure.

There’s HTTPS.
here’s Google / GitHub login.
There’s tokens and states and redirects.

And yet — a single logic mistake can turn OAuth into a silent account takeover where:

• The victim logs in normally
• Nothing “looks hacked”
• The attacker gains access anyway

This post breaks down OAuth Misbinding — a vulnerability that doesn’t steal passwords, doesn’t brute-force tokens, and doesn’t trigger alerts.

It abuses broken trust between identity and session.