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CVE-2026-107294 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/pydantic/pydantic-ai/commit/7a64d049c3f5271a975cd1d64b2fa876d83ede1d	[email protected]	Patch
https://github.com/pydantic/pydantic-ai/commit/e3824a58c82864ed26afb2887619834a4eb86cc8	[email protected]	Patch
https://github.com/pydantic/pydantic-ai/pull/7141	[email protected]	PatchIssue Tracking
https://github.com/pydantic/pydantic-ai/pull/7308	[email protected]	PatchIssue Tracking
https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.2	[email protected]	PatchRelease Notes
https://github.com/pydantic/pydantic-ai/releases/tag/v2.24.0	[email protected]	PatchRelease NotesVendor Advisory
https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-v2xh-2vp8-57h8	[email protected]	Vendor Advisory

see all 7 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-400	Uncontrolled Resource Consumption	[email protected]

Affected Products

Product	Versions
pydantic pydantic ai	>= 1.77.0, < 1.107.2 >= 2.0.0, < 2.24.0
CPE cpe:2.3:a:pydantic:pydantic_ai::::::python::* cpe:2.3:a:pydantic:pydantic_ai::-::::python:: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Oct 13, 2026	Initial Analysis	[email protected]
Oct 9, 2026	CVE Modified	CISA-ADP
Oct 8, 2026	New CVE Received	[email protected]