CVE-2026-108379— dataclasses-avroschema fixed namespaces allow code injection in generated annotations
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 dataclasses、Pydantic 模型和 Faust Records 生成 Avro 模式，并能够从 Avro 模式生成 Python 代码。在 0.38.0 至 0.70.5 版本中， 方法在未进行转义或验证的情况下，将固定类型（fixed type）的命名空间值直接以引号包裹的形式插入到生成的 注解内部。攻击者可通过精心构造的引号字符提前结束命名空间字符串，从而篡改周围注解的表达结构；由于 Python 在定义生成的类时会评估该注解内容
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting InterpreterAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| marcosschroh | dataclasses-avroschema | >= 0.38.0, < 0.70.6 |
affected |
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I. Basic Information for CVE-2026-108379
Vulnerability Information
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Vulnerability Title
dataclasses-avroschema fixed namespaces allow code injection in generated annotations
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, BaseGenerator.parse_fixed inserts a fixed type's namespace value between quotes inside a generated types.confixed annotation without escaping or validating it. A crafted quote can terminate the namespace string and alter the surrounding annotation expression, which Python evaluates when the generated class is defined, allowing arbitrary code execution. Version 0.70.6 fixes the vulnerability by requiring the namespace to be a dot-separated sequence of valid Avro 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-2026-108379
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-108379 (1)
Vendor Pages for CVE-2026-108379 (1)
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🔗 Release 0.70.6 · marcosschroh/dataclasses-avroschema · GitHub x_refsource_MISC
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-2026-108382 | 8.8 HIGH | dataclasses-avroschema allows code injection through generated enum-symbol string literals |
| CVE-2026-108383 | 8.8 HIGH | dataclasses-avroschema enum field defaults can inject statements into generated modules |
| 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 |
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