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CVE-2026-108383— dataclasses-avroschema enum field defaults can inject statements into generated modules

Quick assessment

Affected
marcosschroh dataclasses-avroschema
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

dataclasses-avroschema 能够从 Python 数据类（dataclasses）、Pydantic 模型以及 Faust Records 生成 Avro 模式（schema），并能够从 Avro 模式生成 Python 代码。在 0.38.0 到 0.70.5 版本中， 方法在处理受模式控制的枚举字段默认值时，在应用大小写转换后会将其呈现为枚举成员引用，但未对其作为标识符的有效性进行验证。攻击者可以利用换行符、运算符和标点符号绕过预期的引用机制，向生成的 Python 模块中注入受限语句，从而可

CVSS 8.8 · High

Possible ATT&CK Techniques 1 AI

T1195.002 · Compromise Software Supply Chain

Affected Version Matrix 1

VendorProduct Version RangeStatus
marcosschroh dataclasses-avroschema >= 0.38.0, < 0.70.6 affected
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I. Basic Information for CVE-2026-108383

Vulnerability Information
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Vulnerability Title
dataclasses-avroschema enum field defaults can inject statements into generated modules
Source: CVE Program / CVE List V5
Vulnerability 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, FieldRepresentation.get_field_default renders a schema-controlled enum field default as an enum member reference after applying case conversion but without validating it as an identifier. Newlines, operators, and punctuation can escape the intended reference and inject constrained statements into the generated module, allowing namespace modification or preventing the module from loading. Version 0.70.6 fixes the vulnerability by validating enum defaults as names.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
marcosschroh dataclasses-avroschema >= 0.38.0, < 0.70.6 -

II. Public POCs for CVE-2026-108383

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III. Intelligence Information for CVE-2026-108383

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Vendor Advisories for CVE-2026-108383 (1)

Vendor Pages for CVE-2026-108383 (1)

Same Patch Batch · marcosschroh · 2026-10-13 · 11 CVEs total

CVE-2026-108376 8.8 HIGH dataclasses-avroschema allows code injection through record names in generated default fac
CVE-2026-108375 8.8 HIGH dataclasses-avroschema allows code injection through generated field-default literals
CVE-2026-108377 8.8 HIGH dataclasses-avroschema allows code injection through generated Meta.schema_name
CVE-2026-108380 8.8 HIGH dataclasses-avroschema field documentation allows code injection in generated Pydantic des
CVE-2026-108378 8.8 HIGH dataclasses-avroschema record documentation can terminate generated class docstrings
CVE-2026-108381 8.8 HIGH dataclasses-avroschema pydantic-class metadata allows code injection in generated annotati
CVE-2026-108379 8.8 HIGH dataclasses-avroschema fixed namespaces allow code injection in generated annotations
CVE-2026-108382 8.8 HIGH dataclasses-avroschema allows code injection through generated enum-symbol string literals
CVE-2026-108385 8.8 HIGH dataclasses-avroschema enum symbols can inject statements through generated member names
CVE-2026-108384 8.8 HIGH dataclasses-avroschema allows code injection through fixed-type aliases supplied as a bare

IV. Related Vulnerabilities

Same product: dataclasses-avroschema
Same vendor: marcosschroh
Same weakness: CWE-94

V. Comments for CVE-2026-108383

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