---
id: CVE-2026-108381
title: >-
  dataclasses-avroschema generates Avro schemas from Python dataclasses,
  Pydantic models, and Faust Records and generates Python code from Avro schemas
summary: >-
  dataclasses-avroschema generates Avro schemas from Python dataclasses,
  Pydantic models, and Faust Records and generates Python code from Avro
  schemas. From version 0.44.0 through 0.70.5, the Pydantic and AvroDantic model
  generators inser…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
vendor: marcosschroh
product: dataclasses-avroschema
affected:
  - 'dataclasses-avroschema >= 0.44.0, < 0.70.6'
published: '2026-10-13'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T23:16:58.510'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108381'
references:
  - url: >-
      https://github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c65e2ef832daed5ff91318fc
    label: security-advisories@github.com
  - url: 'https://github.com/marcosschroh/dataclasses-avroschema/pull/358'
    label: security-advisories@github.com
  - url: 'https://github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6'
    label: security-advisories@github.com
  - url: >-
      https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-4jmx-9m83-vxx8
    label: security-advisories@github.com
  - url: >-
      https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-4jmx-9m83-vxx8
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00377
epssPercentile: 0.31497
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T22:23:33.270887Z'
ingestedAt: '2026-10-13T18:41:42.739Z'
---

## Overview

dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.44.0 through 0.70.5, the Pydantic and AvroDantic model generators insert a schema field's pydantic-class value after pydantic. in a generated field annotation without safely restricting the expression. Because annotations are evaluated when the generated module is imported, a crafted value can execute arbitrary Python code. Version 0.70.6 fixes the vulnerability by restricting the value to a bare name or a call to a bare name with literal arguments.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.