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2.3 Low

CVE-2026-107293 Pydantic AI is a Python agent framework for building applications and workflows with Generative AI

Description

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 0.3.4 until 1.107.4 and 2.27.1, OpenTelemetry instrumentation configured with InstrumentationSettings(include_content=False) can export retry prompts outside tool calls in gen_ai.input.messages and pydantic_ai.all_messages. Agents using NativeOutput, PromptedOutput, or output validators on text output can therefore disclose validation feedback, including invalid model values quoted by that feedback, to readers of the telemetry backend. Tool-call retries and deployments that do not use include_content=False are not affected by this specific path. This issue is fixed in versions 1.107.4 and 2.27.1.

Affected products and versions

Product Affected versions Fixed in
pydantic-ai 2.0 2.0.0b1 → < 2.27.1 2.27.1
pydantic-ai 0.3 0.3.4 → < 1.107.4 1.107.4
pydantic-ai-slim 2.0 2.0.0b1 → < 2.27.1 2.27.1
pydantic-ai-slim 0.3 0.3.4 → < 1.107.4 1.107.4

References

Timeline

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CVE-2026-107295 Pydantic AI is a Python agent framework for building applications and workflows with Generative AI 7.6 High CVE-2026-107294 Pydantic AI is a Python agent framework for building applications and workflows with Generative AI 6.5 Medium CVE-2026-107292 Pydantic AI is a Python agent framework for building applications and workflows with Generative AI 6.4 Medium CVE-2026-107291 Pydantic AI is a Python agent framework for building applications and workflows with Generative AI 2.3 Low
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