6.5

CVE-2026-107294

Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellerpydantic
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Produkt pydantic-ai
Version >= 1.77.0, < 1.107.2
Status affected
Version >= 2.0.0b1, < 2.24.0
Status affected
Herstellerpydantic
≫
Produkt pydantic-ai-slim
Version >= 1.77.0, < 1.107.2
Status affected
Version >= 2.0.0b1, < 2.24.0
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.43% 0.357
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-v2xh-2vp8-57h8
https://github.com/pydantic/pydantic-ai/pull/7141
https://github.com/pydantic/pydantic-ai/pull/7308
https://github.com/pydantic/pydantic-ai/commit/7a64d049c3f5271a975cd1d64b2fa876d83ede1d
https://github.com/pydantic/pydantic-ai/commit/e3824a58c82864ed26afb2887619834a4eb86cc8
https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.2
https://github.com/pydantic/pydantic-ai/releases/tag/v2.24.0