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CVE-2026-107294

6.5 medium SSVC exploitation: none Analyzed
NVD · CVE.org

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 1.77.0 until 1.107.2 and 2.24.0, web_fetch_tool, the WebFetch local fallback, and remote FileUrl media downloads buffer the complete HTTP response body before enforcing content-size controls. An attacker-influenced URL can stream an arbitrarily large response that exhausts process memory and crashes the worker; affected media types include ImageUrl, DocumentUrl, VideoUrl, and AudioUrl. SSRF protections remain effective, and the impact is limited to availability. This issue is fixed in versions 1.107.2 and 2.24.0.

Fix

Patch, vendor advisory and mitigation references on NVD 7

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.5 · pydanticNVD modified 2026-10-13 13:49

Affected (CPE criteria) 2

  • cpe:2.3:a:pydantic:pydantic_ai:*:*:*:*:*:python:*:*
  • cpe:2.3:a:pydantic:pydantic_ai:*:-:*:*:*:python:*:*

References 7