v1.107.9

Name: pydantic-ai
Author: pydantic

pydantic/pydantic-aiv1.107.9Oct 21, 2026by dsfaccini

Upgrading?

Full Release Notes

> This comment was posted by Codex Desktop using gpt-6.1-sol on behalf of David.

## What's Changed
### 🛡️ Security
* **High — HTML conversion in `web_fetch`:** [GHSA-4whf-38hw-pxxh](https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-4whf-38hw-pxxh). When `web_fetch_tool` fetched attacker-controlled HTML containing many elements, conversion could delay unrelated work in the same process. Fixed in v2.59.0 and v1.107.9. Upgrade if the tool can fetch such pages.



**Full Changelog**: https://github.com/pydantic/pydantic-ai/compare/v1.107.8...v1.107.9

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