CVE-2026-107287 Pydantic AI: Excessive resource use when local web fetching converts nested HTML

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.7 and 2.52.0, the local webfetchtool and the WebFetch local fallback can consume excessive CPU and memory during HTML-to-Markdown conversion of attacker-controlled HTML...

PT-2026-108054

Name of the Vulnerable Software and Affected Versions Pydantic AI versions 1.77.0 through 1.107.1 Pydantic AI versions prior to 2.24.0 Description Certain remote-content download paths buffer the entire HTTP response body into memory before enforcing content-size controls. This occurs when using...

PT-2026-108032

Name of the Vulnerable Software and Affected Versions Pydantic AI versions 1.77.0 through 1.107.6 Pydantic AI versions prior to 2.52.0 Description The local web fetch tool and the WebFetch local fallback can consume excessive CPU and memory during the conversion of HTML to Markdown. This occurs...