CVE-2026-107289Medium· 6.8▾ SunlitPydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.56.0 until 1.107.6 and 2.44.0, applications that opt attacker-influenced URLs into local network access through FileUrl with force…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 37.4 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.56.0 until 1.107.6 and 2.44.0, applications that opt attacker-influenced URLs into local network access through FileUrl with force_download='allow-local' or web_fetch_tool with allow_local_urls=True can bypass the cloud-metadata blocklist by appending an IPv6 zone identifier to an IPv6 metadata address. IPv6Address equality and hashing include the zone identifier, so the blocklist comparison fails even though the network stack ignores the zone on a non-link-local destination and reaches the metadata service, potentially exposing cloud IAM credentials. The opt-in settings are disabled by default, and the issue requires an IPv6-enabled environment. This issue is fixed in versions 1.107.6 and 2.44.0.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
pydantic-ai >= 1.56.0, < 1.107.6pydantic-ai >= 2.0.0b1, < 2.44.0pydantic-ai-slim >= 1.56.0, < 1.107.6pydantic-ai-slim >= 2.0.0b1, < 2.44.0Patched in:
pydantic-ai 1.107.6pydantic-ai 2.44.0pydantic-ai-slim 1.107.6pydantic-ai-slim 2.44.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-107288Low· 3.7Pydantic AI is a Python agent framework for building applications and workflows with Generative AI
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