Vulnerability · Published Oct 8, 2026 · Assigned by GitHub_M
CVE-2026-107293Pydantic AI OpenTelemetry instrumentation: retry prompt content is not redacted when `include_content=False`
Low 2.3
In plain English
A low-severity sensitive data in logs in pydantic-ai from pydantic. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | pydantic-ai | 1.107.4 | GHSA-3gh4-cghq-f8v4 |
| PyPI | pydantic-ai | 2.27.1 | GHSA-3gh4-cghq-f8v4 |
| PyPI | pydantic-ai | 1.107.4, 2.27.1 | PYSEC-2026-4274 |
| PyPI | pydantic-ai-slim | 1.107.4 | GHSA-3gh4-cghq-f8v4 |
| PyPI | pydantic-ai-slim | 2.27.1 | GHSA-3gh4-cghq-f8v4 |
| PyPI | pydantic-ai-slim | 1.107.4, 2.27.1 | PYSEC-2026-4283 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| pydantic | pydantic-ai | >= 0.3.4, < 1.107.4>= 2.0.0b1, < 2.27.1 |
| pydantic | pydantic-ai-slim | >= 0.3.4, < 1.107.4>= 2.0.0b1, < 2.27.1 |
Weakness: CWE-212, CWE-532 · Vector: 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
References
- https://github.com/pydantic/pydantic-ai/security/advisories/GHSA-3gh4-cghq-f8v4 x_refsource_CONFIRM
- https://github.com/pydantic/pydantic-ai/pull/7357 x_refsource_MISC
- https://github.com/pydantic/pydantic-ai/commit/fe9dbed7b7ccf7e7128b5786886e4441f6f5594f x_refsource_MISC
- https://github.com/pydantic/pydantic-ai/releases/tag/v2.27.1 x_refsource_MISC