marcosschroh dataclasses-avroschema up to 0.70.5 Enum Symbol Rendering EnumRepresentation.render_symbols code injection

Summaryinfo

A vulnerability categorized as critical has been discovered in marcosschroh dataclasses-avroschema up to 0.70.5. This impacts the function EnumRepresentation.render_symbols of the component Enum Symbol Rendering. Such manipulation leads to code injection. This vulnerability is documented as CVE-2026-108382. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in marcosschroh dataclasses-avroschema up to 0.70.5 and classified as critical. Affected by this issue is the function EnumRepresentation.render_symbols of the component Enum Symbol Rendering. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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, EnumRepresentation.render_symbols concatenates each schema-controlled enum symbol between double quotes in a generated enum assignment. When generator classes are used directly, a quote can terminate the string literal and inject arbitrary Python code into the enum class body, which executes when the generated module is imported. Version 0.70.6 fixes the vulnerability by escaping enum symbol values before rendering them.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-108382 since 10/09/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Upgrading to version 0.70.6 eliminates this vulnerability.

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Productinfo

Vendor

• marcosschroh

Name

• dataclasses-avroschema

Version

• 0.70.0
• 0.70.1
• 0.70.2
• 0.70.3
• 0.70.4
• 0.70.5

Website

• Product: https://github.com/marcosschroh/dataclasses-avroschema/

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