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CVE-2026-107291

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

Description (CNA)

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 (CNA)

Vendor / productVersions
pydantic / pydantic-aiaffected >= 0.3.4, < 1.107.6; affected >= 2.0.0b1, < 2.44.0
pydantic / pydantic-ai-slimaffected >= 0.3.4, < 1.107.6; affected >= 2.0.0b1, < 2.44.0

CWE

CWE-212, CWE-532

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.