Mend.io Vulnerability Database
The largest open source vulnerability database
What is a Vulnerability ID?
New vulnerability? Tell us about it!
CVE-2026-107291
Published:October 08, 2026
Updated:October 09, 2026
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 Packages
https://github.com/pydantic/pydantic-ai.git (GITHUB):
Affected version(s) >=v1.0.0b1 <v1.107.6
Fix Suggestion:
Update to version v1.107.6
https://github.com/pydantic/pydantic-ai.git (GITHUB):
Affected version(s) >=v2.0.0b1 <v2.44.0
Fix Suggestion:
Update to version v2.44.0
pydantic-ai-slim (PYTHON):
Affected version(s) >=2.0.0b1 <2.44.0
Fix Suggestion:
Update to version 2.44.0
pydantic-ai-slim (PYTHON):
Affected version(s) >=1.0.0b1 <1.107.6
Fix Suggestion:
Update to version 1.107.6
pydantic-ai (PYTHON):
Affected version(s) >=0.3.4 <1.107.6
Fix Suggestion:
Update to version 1.107.6
pydantic-ai (PYTHON):
Affected version(s) >=2.0.0b1 <2.44.0
Fix Suggestion:
Update to version 2.44.0
Do you need more information?
Contact Us
CVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Improper Removal of Sensitive Information Before Storage or Transfer
Insertion of Sensitive Information into Log File