CVE-2026-108384: CWE-94: Improper Control of Generation of Code ('Code Injection') in marcosschroh dataclasses-avroschema
Description
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 interpolates a fixed type's aliases value directly into a generated types.confixed annotation. A list is represented with quoted entries, but a bare string is emitted as an unquoted Python expression and evaluated when the generated module is imported, allowing arbitrary code execution from a crafted schema. Version 0.70.6 fixes the vulnerability by rejecting aliases values that are not lists.
CVSS v3.1
Score 8.8high
Affected software
marcosschroh
dataclasses-avroschema
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-09T21:36:27.043Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ace72972cdf04f65692fb0c
Added to database: 10/13/2026, 18:04:07 UTC
Last updated: 10/13/2026, 18:04:07 UTC
Views: 1
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