CVE-2026-108377

High

Description

dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.62.3 through 0.70.5, ClassRepresentation.render_metaclass inserts a schema-controlled Avro record name into the quoted Meta.schema_name field of generated Python source without escaping it. A crafted name can terminate the string literal and inject statements into the generated class body, which execute when the generated module is imported. Version 0.70.6 fixes the vulnerability by escaping schema values rendered into generated string literals.

SeverityHigh
CVSS8.8
Exploit probability32. percentile0.4%
ProductMarcosschroh Dataclasses-avroschema
PublishedOct 13, 2026
First seenOct 13, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
marcosschroh dataclasses-avroschema>= 0.62.3, < 0.70.6—

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CVE-2026-108377 · Marcosschroh Dataclasses-avroschema · Dark Radar