CVE-2026-107295

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.toweb and clai web development chat endpoint has missing request content-type validation. A website visited by a developer can submit a...

CVE-2026-107292

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.toweb 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...

GHSA-H4XC-3QFQ-JF93 Pydantic AI Web chat UI (`Agent.to_web()`, `clai web`): a website visited by the developer can trigger agent runs and server-side tool execution on the local chat endpoint

Summary The Pydantic AI development web chat UI Agent.toweb, clai web did not check the content type of requests to its chat endpoint. This allowed a website visited by a developer to submit a request to a chat UI running on that developer's machine, causing the served agent to run and to execute...

Pydantic AI Web chat UI (`Agent.to_web()`, `clai web`): a website visited by the developer can trigger agent runs and server-side tool execution on the local chat endpoint

Summary The Pydantic AI development web chat UI Agent.toweb, clai web did not check the content type of requests to its chat endpoint. This allowed a website visited by a developer to submit a request to a chat UI running on that developer's machine, causing the served agent to run and to execute...

CVE-2026-107295

The Pydantic AI Python agent framework (versions 1.34.0 to 1.107.3 and 2.28.0) is vulnerable to a Cross-Site Request Forgery (CSRF) due to missing request content-type validation in the Agent.to_web() and clai web development chat endpoints. A malicious website visited by a developer can submit a...

CVE-2026-107295 `pydantic-ai-slim` web UI `/api/chat` accepts browser-simple cross-origin requests that can trigger agent tool execution

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.toweb and clai web development chat endpoint has missing request content-type validation. A website visited by a developer can submit a...

EUVD-2026-95106

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.toweb and clai web development chat endpoint has missing request content-type validation. A website visited by a developer can submit a...

CVE-2026-107292

The Pydantic AI Python agent framework is vulnerable in versions 1.34.0 through 2.30.0 due to a lack of Host header validation in the Agent.to_web() and clai web development chat servers. An attacker can leverage DNS rebinding from a malicious website to bypass Origin checks and CSRF tokens , acc...

EUVD-2026-95099

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.toweb 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...

CVE-2026-107292 Pydantic AI Web chat UI (`Agent.to_web()`, `clai web`): the local chat endpoint does not validate the `Host` header

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.toweb 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...

CVE-2026-25640: Improper Limitation of a Pathname to a Restricted Directory

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.34.0 to before 1.51.0, a path traversal vulnerability in the Pydantic AI web UI allows an attacker to serve arbitrary JavaScript in the context of the application by crafting a malicious URL...