7.6
High
CVE-2026-107295 Pydantic AI is a Python agent framework for building applications and workflows with Generative AI
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| pydantic-ai 2.0 | 2.0.0b1 → < 2.28.0 | 2.28.0 |
| pydantic-ai 1.34 | 1.34.0 → < 1.107.4 | 1.107.4 |
| pydantic-ai-slim 2.0 | 2.0.0b1 → < 2.28.0 | 2.28.0 |
| pydantic-ai-slim 1.34 | 1.34.0 → < 1.107.4 | 1.107.4 |
References
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
Timeline
- Published
- Last modified
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CVE-2026-107294
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI
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CVE-2026-107293
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CVE-2026-107292
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CVE-2026-107291
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2.3
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