CVE Watch13 oct 2026

CVE-2026-107288

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, th

CVSS

3.7

Bajo

EPSS

0.4%

p29

KEV

—

Exploit Today

0-100

Publicado: 8 oct 2026 · Última mod.: 13 oct 2026 · CWE-918 · CWE-1289

EPSS · 30d

0.4%EPSS · 30 días0.4%

2026-10-092026-10-20

Descripción técnica

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 compare blocked_domains entries with a URL hostname before both values are normalized to the form used by getaddrinfo. An attacker-influenced model can use an equivalent IDNA spelling, non-ASCII label separator, case variation, or trailing root label that resolves to a blocked host but does not match the configured string, causing the application to fetch that host with its own privileges. allowed_domains fails closed for unmatched spellings, and private-IP and cloud-metadata protections remain effective. This issue is fixed in versions 1.107.6 and 2.44.0.

Referencias oficiales

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