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Pydantic AI's DNS-Rebind Bypass of Its Egress Allowlist

Originally published at webofmike.com on 2026-11-06. The demo repo and every command in it were run before publishing. A DNS record that changes between the moment code checks it and the moment code uses it can beat an egress allowlist that resolves a hostname twice. Pydantic AI patched exactly tha…

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  1. 2026-11-06 18:02 · DEV Community — AI
    Pydantic AI's DNS-Rebind Bypass of Its Egress Allowlist

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