CVE Catalog

CVE-2026-108379

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Summary

The dataclasses-avroschema library versions 0.38.0 through 0.70.5 does not escape or validate the namespace value of a fixed type, inserting it in quotes into a types.confixed annotation. This allows arbitrary Python code execution when the generated class is defined.

Risk Assessment

An attacker able to supply a crafted Avro schema can execute arbitrary Python code in the application context, leading to full system compromise.

Recommendation

Update the dataclasses-avroschema library to version 0.70.6 or later, which requires the namespace to be a dot-separated sequence of valid Avro names.

Other vulnerabilities in dataclasses-avroschema

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Original NVD description (English source)

dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.38.0 through 0.70.5, BaseGenerator.parse_fixed inserts a fixed type's namespace value between quotes inside a generated types.confixed annotation without escaping or validating it. A crafted quote can terminate the namespace string and alter the surrounding annotation expression, which Python evaluates when the generated class is defined, allowing arbitrary code execution. Version 0.70.6 fixes the vulnerability by requiring the namespace to be a dot-separated sequence of valid Avro names.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS