CVE-2026-107294Medium· 6.5▾ SunlitPydantic 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0.1 · 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.
Exploit-prediction probability, daily snapshots since Oct 10.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.4%
Last analysed / modified upstream
0.4% → 0.4%
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.
pydantic_ai >= 1.77.0, < 1.107.2pydantic_ai >= 2.0.0, < 2.24.0Upgrade past the affected range:
pydantic_ai 2.24.0Affected packages:
pydantic-ai >= 1.77.0, < 1.107.2pydantic-ai >= 2.0.0b1, <= 2.23.0pydantic-ai-slim >= 1.77.0, < 1.107.2pydantic-ai-slim >= 2.0.0b1, <= 2.23.0Patched in:
pydantic-ai 1.107.2pydantic-ai 2.24.0pydantic-ai-slim 1.107.2pydantic-ai-slim 2.24.0Connected by shared product, vendor, weakness, or advisory.
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