Vulnerability · Published Oct 13, 2026 · Assigned by GitHub_M
CVE-2026-108385dataclasses-avroschema enum symbols can inject statements through generated member names
High 8.8
In plain English
A high-severity code injection in dataclasses-avroschema from marcosschroh. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| marcosschroh | dataclasses-avroschema | >= 0.38.0, < 0.70.6 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-gw6w-pvv9-2fqc x_refsource_CONFIRM
- https://github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c65e2ef832daed5ff91318fc x_refsource_MISC
- https://github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6 x_refsource_MISC