CVE-2026-108384— dataclasses-avroschema allows code injection through fixed-type aliases supplied as a bare string
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 模型和 Faust 记录中生成 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，BaseGenerator.parse_fixed 方法会直接将固定类型（fixed type）的 aliases 值插值到生成的 types.confixed 注解中。当 aliases 为列表时，其条目会被引号包裹；但当其为普通字符串时，则会被作为未加引
Possible ATT&CK Techniques 1 AI
T1195 · Supply Chain CompromiseAffected 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-2026-108384
Vulnerability Information
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Vulnerability Title
dataclasses-avroschema allows code injection through fixed-type aliases supplied as a bare string
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 interpolates a fixed type's aliases value directly into a generated types.confixed annotation. A list is represented with quoted entries, but a bare string is emitted as an unquoted Python expression and evaluated when the generated module is imported, allowing arbitrary code execution from a crafted schema. Version 0.70.6 fixes the vulnerability by rejecting aliases values that are not lists.
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-2026-108384
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-108384 (1)
Vendor Pages for CVE-2026-108384 (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-2026-108379 | 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 |
IV. Related Vulnerabilities
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CVE-2026-108385
dataclasses-avroschema enum symbols can inject statements th -
CVE-2026-108383
dataclasses-avroschema enum field defaults can inject statem -
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CVE-2026-108381
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