CVE-2026-108380— dataclasses-avroschema field documentation allows code injection in generated Pydantic descriptions
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 用于从 Python dataclasses、Pydantic 模型和 Faust Records 生成 Avro 模式，并可从 Avro 模式生成 Python 代码。在 0.65.9 至 0.70.5 版本中， 方法在生成的 描述参数中插入模式字段的 doc（文档）值时，未对其进行转义处理。攻击者可通过构造包含引号的恶意 doc 值，闭合字符串并注入在类定义执行时会被求值的表达式，从而在生成 Pydantic 和 AvroDantic 模型时实现任意 Python
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| marcosschroh | dataclasses-avroschema | >= 0.65.9, < 0.70.6 |
affected |
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I. Basic Information for CVE-2026-108380
Vulnerability Information
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Vulnerability Title
dataclasses-avroschema field documentation allows code injection in generated Pydantic descriptions
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 0.65.9 through 0.70.5, PydanticFieldRepresentation.add_field_properties inserts a schema field's doc value between the quotes of a generated pydantic.Field description argument without escaping it. A crafted quote can terminate the string and inject an expression evaluated during generated class definition, allowing arbitrary Python code execution for Pydantic and AvroDantic model generation. Version 0.70.6 fixes the vulnerability by escaping the documentation value before rendering it.
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 | >= 0.65.9, < 0.70.6 | - |
|
II. Public POCs for CVE-2026-108380
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-108380 (1)
Vendor Advisories for CVE-2026-108380 (1)
Vendor Pages for CVE-2026-108380 (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-2026-108378 | 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-2026-108383 | 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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