CVE-2026-107291: Pydantic AI OpenTelemetry instrumentation: exception events on tool and agent run spans include content when `include_content=False`
pydantic · pydantic-ai
Affected: pydantic-ai · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 50% of scored CVEs
DescriptionCVE.org
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 products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- 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
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- Improper Removal of Sensitive Information Before Storage or Transfer · Information Disclosure
- Vendor
- pydantic
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-107291 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-212cwe.mitre.org
- github.com/pydantic/pydantic-ai/security/advisories/GHSA-4x9p-g9github.com
- github.com/pydantic/pydantic-ai/pull/8403github.com
- github.com/pydantic/pydantic-ai/pull/8404github.com
- github.com/pydantic/pydantic-ai/pull/8408github.com
- github.com/pydantic/pydantic-ai/pull/8428github.com
- github.com/pydantic/pydantic-ai/pull/8429github.com
- github.com/pydantic/pydantic-ai/commit/4e013c51a50659aba2adf7853github.com
- github.com/pydantic/pydantic-ai/commit/6b14c74cb281f899a2ae4fae5github.com
- github.com/pydantic/pydantic-ai/commit/7ee27e38ab2e525ca60ff1a25github.com
- github.com/pydantic/pydantic-ai/commit/963dec5f70d6f558997fc2593github.com
- github.com/pydantic/pydantic-ai/commit/de4e61515327bd80a19cd8552github.com
- github.com/pydantic/pydantic-ai/releases/tag/v1.107.6github.com
1 more reference is in the CVE record.