What’s Vulnerable › Vulnerabilities

CVE-2026-108385: dataclasses-avroschema enum symbols can inject statements through generated member names

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-13 · updated 2026-10-16
• Weakness: CWE-94

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_enum and EnumRepresentation.render_symbols use each schema-controlled enum symbol as a generated enum member name after case conversion but without validating it as an identifier. When generator classes are used directly, newlines and punctuation can inject constrained statements into the generated enum class body, allowing namespace modification or preventing the module from loading. Version 0.70.6 fixes the vulnerability by validating every enum symbol as a name.

Affected products

• marcosschroh dataclasses-avroschema: from 0.38.0, < 0.70.6

References

• https://github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c65e2ef832daed5ff91318fc
• https://github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6
• https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-gw6w-pvv9-2fqc
• https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-gw6w-pvv9-2fqc

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