pydantic-ai 2.28.0 · web UI CSRF fix — from issue No. 007nofeed.dev
Issue No. 007 · 12 August 2026
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pydantic-ai 2.28.0 · web UI CSRF fix

High-severity fix for Agent.to_web() / clai web: the chat endpoint ignored content type, so a cross-origin page in the developer's browser could trigger the local agent and its tools without a CORS preflight. Now requires Content-Type: application/json. Patched in 2.28.0 and 1.107.3.4

MATTERS TO · anyone who runs the pydantic-ai dev web chat on a workstation
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