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
Affected Vendors & Products
References
History
Tue, 13 Oct 2026 14:00:00 +0000
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| First Time appeared |
Pydantic pydantic Ai
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| CPEs | cpe:2.3:a:pydantic:pydantic_ai:*:*:*:*:*:python:*:* cpe:2.3:a:pydantic:pydantic_ai:*:-:*:*:*:python:*:* |
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| Vendors & Products |
Pydantic pydantic Ai
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Fri, 09 Oct 2026 16:30:00 +0000
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| Metrics |
ssvc
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Fri, 09 Oct 2026 00:15:00 +0000
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| Weaknesses | CWE-770 | |
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| Metrics |
threat_severity
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threat_severity
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Thu, 08 Oct 2026 20:45:00 +0000
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Pydantic
Pydantic pydantic-ai |
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| Vendors & Products |
Pydantic
Pydantic pydantic-ai |
Thu, 08 Oct 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
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| 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. | |
| Title | Pydantic AI: Unbounded memory use when downloading remote content via web_fetch or FileUrl | |
| Weaknesses | CWE-400 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-08T16:59:25.246Z
Updated: 2026-10-09T15:15:18.765Z
Reserved: 2026-10-07T15:53:23.586Z
Link: CVE-2026-107294
Updated: 2026-10-08T20:23:19.737Z
Status : Analyzed
Published: 2026-10-08T17:17:15.080
Modified: 2026-10-13T13:49:02.473
Link: CVE-2026-107294