Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.6 and 2.44.0, the local web_fetch_tool and the WebFetch local fallback process server-controlled responses with quadratic title extraction, whitespace normalization, and ordered-list numbering. An attacker-controlled page of modest size can therefore block the event loop for an extended period, stalling other agent runs and requests, while unsupported codecs or excessive HTML or JSON nesting can abort an individual run. This issue is fixed in versions 1.107.6 and 2.44.0.
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History
Tue, 13 Oct 2026 14:45:00 +0000
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Pydantic pydantic Ai
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| CPEs | cpe:2.3:a:pydantic:pydantic_ai:*:*:*:*:*:python:*:* cpe:2.3:a:pydantic:pydantic_ai:*:-:*:*:*:python:*:* |
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Pydantic pydantic Ai
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Fri, 09 Oct 2026 16:30:00 +0000
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ssvc
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Fri, 09 Oct 2026 00:15:00 +0000
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| Weaknesses | CWE-1322 | |
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threat_severity
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threat_severity
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Thu, 08 Oct 2026 19:45:00 +0000
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Pydantic
Pydantic pydantic-ai |
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Pydantic
Pydantic pydantic-ai |
Thu, 08 Oct 2026 16:45:00 +0000
Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-08T16:09:04.272Z
Updated: 2026-10-09T15:15:26.958Z
Reserved: 2026-10-07T15:53:23.586Z
Link: CVE-2026-107290
Updated: 2026-10-08T20:23:21.178Z
Status : Analyzed
Published: 2026-10-08T17:17:14.413
Modified: 2026-10-13T14:34:38.623
Link: CVE-2026-107290