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OpenAdvisories
Low · 2.3 CVE-2026-107291 EUVD-2026-95095GHSA-4x9p-g9wm-8q7fPYSEC-2026-4275PYSEC-2026-4284

Pydantic AI OpenTelemetry instrumentation: exception events on tool and agent run spans include content when `include_content=False`

Published Oct 8, 2026 · Updated Oct 8, 2026 · Assigned by GitHub_M

Description

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 0.3.4 until 1.107.6 and 2.44.0, OpenTelemetry instrumentation configured with InstrumentationSettings(include_content=False) can still export sensitive agent content through exception.message and exception.stacktrace events, error status descriptions, and model_request_parameters containing instructions or the prompted_output_template. The exposed data is available to readers of the configured telemetry backend and can include tool feedback, provider error bodies, runtime instructions, and structured-output templates even though message attributes are redacted. This issue does not grant new access to agent data, and deployments that do not use include_content=False are not affected by the setting bypass. This issue is fixed in versions 1.107.6 and 2.44.0.

Affected products

VendorProductAffectedFixed
pydantic pydantic-ai >= 0.3.4, < 1.107.6, >= 2.0.0b1, < 2.44.0 —
pydantic pydantic-ai-slim >= 0.3.4, < 1.107.6, >= 2.0.0b1, < 2.44.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI pydantic-ai >= 0.3.4, < 1.107.6 1.107.6 GHSA-4x9p-g9wm-8q7f
PyPI pydantic-ai >= 2.0.0b1, < 2.44.0 2.44.0 GHSA-4x9p-g9wm-8q7f
PyPI pydantic-ai >= 0.3.4, < 1.107.6 · >= 2.0.0b1, < 2.44.0 1.107.6, 2.44.0 PYSEC-2026-4275
PyPI pydantic-ai-slim >= 0.3.4, < 1.107.6 1.107.6 GHSA-4x9p-g9wm-8q7f
PyPI pydantic-ai-slim >= 2.0.0b1, < 2.44.0 2.44.0 GHSA-4x9p-g9wm-8q7f
PyPI pydantic-ai-slim >= 0.3.4, < 1.107.6 · >= 2.0.0b1, < 2.44.0 1.107.6, 2.44.0 PYSEC-2026-4284

References