CVE-2026-108377 HIGH

CVE-2026-108377: dataclasses-avroschema allows code injection through generated Meta.schema_name

Vendor Marcosschroh
Product dataclasses-avroschema
Weakness CWE-94 · Code injection
Published October 13, 2026
Last update October 13, 2026

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 13, 2026 CVE published
October 13, 2026 Record updated

Related vulnerabilities

04Related CVE