CVE-2026-107293

medium

Pydantic AI is a Python agent framework for building applications and workflows with Generative AI.

Vendor / product: Pydantic — pydantic ai

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.

CVSS

5.3

5.3 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Severity source: NVD CVSS v3.1 (nvd@nist.gov)

Timeline (UTC)

Published: 2026-10-08 17:17

Modified: 2026-10-13 14:30

NVD status: Analyzed

Last synced 2 days ago

Verified against the source API 2026-10-27 06:58 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

pydantic / pydantic_ai ≥0.3.4 <1.107.4, ≥2.0.0 <2.27.1

Weakness classification (CWE)

CWE-212 CWE-532

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://github.com/pydantic/pydantic-ai/pull/7357

Vendor advisory: https://github.com/pydantic/pydantic-ai/releases/tag/v2.27.1

Vendor advisory: https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-3gh4-cghq-f8v4

Patch / mitigation: https://github.com/pydantic/pydantic-ai/commit/fe9dbed7b7ccf7e7128b5786886e4441f6f5594f

Patch / mitigation: https://github.com/pydantic/pydantic-ai/pull/7357

Patch / mitigation: https://github.com/pydantic/pydantic-ai/releases/tag/v2.27.1

Patch / mitigation: https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-3gh4-cghq-f8v4

References

https://github.com/pydantic/pydantic-ai/commit/fe9dbed7b7ccf7e7128b5786886e4441f6f5594f security-advisories@github.com
https://github.com/pydantic/pydantic-ai/pull/7357 security-advisories@github.com
https://github.com/pydantic/pydantic-ai/releases/tag/v2.27.1 security-advisories@github.com
https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-3gh4-cghq-f8v4 security-advisories@github.com

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:58 UTC · record ↗

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CVE-2026-107293

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