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CVE-2026-46678

CVE-2026-46678 · Pydantic AI: SSRF cloud-metadata blocklist bypass via IPv4-mapped IPv6 (Incomplete fix of CVE-2026-25580)

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

Pydantic AI is a Python agent framework for building Generative AI applications. In versions 1.56.0 through 1.98.0, when an application opts a URL into force_download='allow-local' (disabling the default block on private/internal IPs), the cloud-metadata blocklist could be bypassed by encoding the metadata IP in an IPv6 transition form (IPv4-mapped IPv6, 6to4, or NAT64), exposing cloud IAM short-term credentials on dual-stack or translated networks. This is an incomplete fix of GHSA-2jrp-274c-jhv3 / CVE-2026-25580, whose remediation did not hold for IPv6-encoded forms of the metadata IPs. An application is affected only if it explicitly opts a FileUrl (ImageUrl, AudioUrl, VideoUrl, DocumentUrl) into force_download='allow-local' on a URL influenced by untrusted input; it is not affected when using bundled integrations to ingest user input (Agent.to_web / clai web, VercelAIAdapter, AGUIAdapter / Agent.to_ag_ui), since they do not propagate force_download from external data, nor when downloading only from developer-controlled URLs. This issue has been fixed in version 1.99.0.

CVSS 6.8 · Media · EPSS 0,4% · Corrección disponible

Publicación
Actualización

Pila tecnológica: python

Productos y versiones afectados

  • pydantic-ai

    Versiones
    • >= 1.56.0, < 1.99.0: Afectada

    Sin corrección publicada

  • pydantic-ai-slim

    Versiones
    • >= 1.56.0, < 1.99.0: Afectada

    Sin corrección publicada

  • pydantic-ai PyPI

    Versiones
    • 1.56.0
    • 1.57.0
    • 1.58.0
    • 1.59.0
    • 1.60.0
    • 1.61.0
    • 1.62.0
    • 1.63.0
    • 1.64.0
    • 1.65.0
    • 1.66.0
    • 1.67.0
    • 1.68.0
    • 1.69.0
    • 1.70.0
    • 1.71.0
    • 1.72.0
    • 1.73.0
    • 1.74.0
    • 1.75.0
    • 1.76.0
    • 1.77.0
    • 1.78.0
    • 1.79.0
    • 1.80.0
    • 1.81.0
    • 1.82.0
    • 1.83.0
    • 1.84.0
    • 1.84.1
    • 1.85.0
    • 1.85.1
    • 1.86.0
    • 1.86.1
    • 1.87.0
    • 1.88.0
    • 1.89.0
    • 1.89.1
    • 1.90.0
    • 1.91.0
    • 1.92.0
    • 1.93.0
    • 1.94.0
    • 1.95.0
    • 1.95.1
    • 1.96.0
    • 1.96.1
    • 1.97.0
    • 1.98.0
    Intervalos de versiones afectados
    • ECOSYSTEM: ≥ 1.56.0, < 1.99.0

    Actualiza a 1.99.0

  • pydantic-ai-slim PyPI

    Versiones
    • 1.56.0
    • 1.57.0
    • 1.58.0
    • 1.59.0
    • 1.60.0
    • 1.61.0
    • 1.62.0
    • 1.63.0
    • 1.64.0
    • 1.65.0
    • 1.66.0
    • 1.67.0
    • 1.68.0
    • 1.69.0
    • 1.70.0
    • 1.71.0
    • 1.72.0
    • 1.73.0
    • 1.74.0
    • 1.75.0
    • 1.76.0
    • 1.77.0
    • 1.78.0
    • 1.79.0
    • 1.80.0
    • 1.81.0
    • 1.82.0
    • 1.83.0
    • 1.84.0
    • 1.84.1
    • 1.85.0
    • 1.85.1
    • 1.86.0
    • 1.86.1
    • 1.87.0
    • 1.88.0
    • 1.89.0
    • 1.89.1
    • 1.90.0
    • 1.91.0
    • 1.92.0
    • 1.93.0
    • 1.94.0
    • 1.95.0
    • 1.95.1
    • 1.96.0
    • 1.96.1
    • 1.97.0
    • 1.98.0
    Intervalos de versiones afectados
    • ECOSYSTEM: ≥ 1.56.0, < 1.99.0

    Actualiza a 1.99.0

Fuentes originales

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