CVE-2026-54656: Koxudaxi Datamodel-Code-Generator

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

datamodel-code-generator generates Pydantic v2 models, dataclasses, TypedDict, and msgspec.Struct from OpenAPI, JSON Schema, GraphQL, Avro, Protobuf, and raw JSON, YAML, or CSV. From 0.52.1 until 0.60.2, datamodel-code-generator interpolates validators from --extra-template-data in src/datamodel_code_generator/model/pydantic_v2/base_model.py through _process_validators into @field_validator decorators without safe validation, allowing Python code execution when the generated Pydantic v2 model is imported. This issue is fixed in version 0.60.2.

Affected products

• Koxudaxi Datamodel-Code-Generator: from 0.52.1, before 0.60.2 (fixed in 0.60.2)

Published 2026-07-28. Last modified 2026-08-06.