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OpenAdvisories
High · 7.8 CVE-2026-54656 EUVD-2026-50075GHSA-8m8r-38jm-f355PYSEC-2026-3559

`datamodel-code-generator` vulnerable to code execution on import via unescaped `validators` entries in --extra-template-data

Published Jul 28, 2026 · Updated Jul 29, 2026 · Assigned by GitHub_M

Description

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

VendorProductAffectedFixed
koxudaxi datamodel-code-generator >= 0.52.1, < 0.60.2 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI datamodel-code-generator >= 0.52.1, < 0.60.2 0.60.2 GHSA-8m8r-38jm-f355

References