Detections
Analytics
CVE-2026-107292
medium
Description
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.34.0 until 2.30.0, the Agent.to_web() and clai web development chat server does not validate the Host header, allowing a website visited by a developer to use DNS rebinding to reach a loopback-hosted agent as a same-origin service. The hostile page can read the served UI and submit chat requests that execute agent tools with the local process's privileges and credentials, causing data disclosure or unwanted side effects. Binding to localhost, Origin checks, and CSRF tokens do not prevent the same-origin DNS rebinding path. This issue is fixed in versions 1.107.5 and 2.30.0.
References
https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-q2xc-rrxj-58x9
https://github.com/pydantic/pydantic-ai/releases/tag/v2.30.0
https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.5
https://github.com/pydantic/pydantic-ai/pull/7438
https://github.com/pydantic/pydantic-ai/pull/7437
https://github.com/pydantic/pydantic-ai/commit/871c7aeec5dfed2138655ccbccbf15c6d763bae7
https://github.com/pydantic/pydantic-ai/commit/394cc1d31656620704a703a2daed752afa5135fe