---
id: CVE-2026-108377
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 0.62.3 through 0.70.5,
  ClassRepresentation.render_metaclass inserts a sch…
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
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T18:17:16.697'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108377'
references:
  - url: >-
      https://github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c65e2ef832daed5ff91318fc
    label: security-advisories@github.com
  - url: >-
      https://github.com/marcosschroh/dataclasses-avroschema/commit/919d3e07c8938369cfc2c0569007ba373247e74a
    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-57hr-pcm8-p9j9
    label: security-advisories@github.com
  - url: >-
      https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-57hr-pcm8-p9j9
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
ingestedAt: '2026-10-13T18:41:42.738Z'
---

## Overview

dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.62.3 through 0.70.5, ClassRepresentation.render_metaclass inserts a schema-controlled Avro record name into the quoted Meta.schema_name field of generated Python source without escaping it. A crafted name can terminate the string literal and inject statements into the generated class body, which execute when the generated module is imported. Version 0.70.6 fixes the vulnerability by escaping schema values rendered into generated string literals.

## Remediation

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