Code Execution Vulnerability in dataclasses-avroschema Product by Marcos Schroh
CVE-2026-108381

8.8HIGH

Key Information:

Vendor

Marcosschroh

Status
Dataclasses-avroschema
Vendor
CVE Published:
13 October 2026

What is CVE-2026-108381?

The dataclasses-avroschema library, which facilitates the generation of Avro schemas from Python dataclasses and Pydantic models, presents a serious vulnerability in versions 0.44.0 through 0.70.5. The way Pydantic and AvroDantic model generators insert a schema field's pydantic-class value allows for arbitrary Python code execution due to insufficient restrictions on the expressions evaluated during module imports. Users should upgrade to version 0.70.6 or later, which resolves the issue by ensuring that only a bare name or a call to a bare name with literal arguments is allowed.

Affected Version(s)

dataclasses-avroschema >= 0.44.0, < 0.70.6

References

https://github.com/marcosschroh/dataclasses-avroschema/se...
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https://github.com/marcosschroh/dataclasses-avroschema/pu...
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https://github.com/marcosschroh/dataclasses-avroschema/co...
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CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.