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CVE-2026-107295

7.6 high SSVC exploitation: none Analyzed
NVD · CVE.org

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.34.0 until 1.107.4 and 2.28.0, the Agent.to_web() and clai web development chat endpoint has missing request content-type validation. A website visited by a developer can submit a browser-compatible request to a loopback-hosted chat server, causing the served agent to run and execute tools with the privileges and credentials of the local process; client-relayed approval decisions also leave requires_approval=True tools exposed. Binding to localhost does not prevent a browser page from reaching the loopback address. This issue is fixed in versions 1.107.4 and 2.28.0.

Fix

Patch, vendor advisory and mitigation references on NVD 7

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.6 · pydanticNVD modified 2026-10-13 14:16

Affected (CPE criteria) 2

  • cpe:2.3:a:pydantic:pydantic_ai:*:*:*:*:*:python:*:*
  • cpe:2.3:a:pydantic:pydantic_ai:*:-:*:*:*:python:*:*

References 7