Low 2.3Published Oct 8, 2026

CVE-2026-107293Pydantic AI OpenTelemetry instrumentation: retry prompt content is not redacted when `include_content=False`

Updated under an hour ago (2026-10-19 08:00 UTC)

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It affects pydantic-ai and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 2.3 LOW (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-212, CWE-532
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Oct 8, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

pydantic pydantic-ai pydantic:ai (from the name)	from 0.3.4, < 1.107.4; from 2.0.0b1, < 2.27.1	CNA record
pydantic pydantic-ai-slim pydantic:ai_slim (from the name)	from 0.3.4, < 1.107.4; from 2.0.0b1, < 2.27.1	CNA record
pydantic pydantic_ai pydantic:pydantic_ai	from 0.3.4 before 1.107.4; from 2.0.0 before 2.27.1	NVD

References

https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-3gh4-cghq-f8v4x-refsource-confirm, mitigation, vendor-advisory
https://github.com/pydantic/pydantic-ai/pull/7357x-refsource-misc, patch, vendor-advisory
https://github.com/pydantic/pydantic-ai/commit/fe9dbed7b7ccf7e7128b5786886e4441f6f5594fx-refsource-misc, patch
https://github.com/pydantic/pydantic-ai/releases/tag/v2.27.1x-refsource-misc, patch, release-notes, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.