Description
dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.65.9 through 0.70.5, PydanticFieldRepresentation.add_field_properties inserts a schema field's doc value between the quotes of a generated pydantic.Field description argument without escaping it. A crafted quote can terminate the string and inject an expression evaluated during generated class definition, allowing arbitrary Python code execution for Pydantic and AvroDantic model generation. Version 0.70.6 fixes the vulnerability by escaping the documentation value before rendering it.
Published: 2026-10-13
Score: 8.8 High
EPSS: n/a
KEV: No
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History

Tue, 13 Oct 2026 18:00:00 +0000

Type Values Removed Values Added
Description dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.65.9 through 0.70.5, PydanticFieldRepresentation.add_field_properties inserts a schema field's doc value between the quotes of a generated pydantic.Field description argument without escaping it. A crafted quote can terminate the string and inject an expression evaluated during generated class definition, allowing arbitrary Python code execution for Pydantic and AvroDantic model generation. Version 0.70.6 fixes the vulnerability by escaping the documentation value before rendering it.
Title dataclasses-avroschema field documentation allows code injection in generated Pydantic descriptions
Weaknesses CWE-94
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-13T18:17:04.630Z

Reserved: 2026-10-09T21:36:27.043Z

Link: CVE-2026-108380

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-13T18:17:17.157

Modified: 2026-10-13T18:17:17.157

Link: CVE-2026-108380

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses