CVE-2026-54656

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.

Score

CVSS 3.1 7.8 High

Status

Analyzed - security-advisories@github.com

Published

2026-07-28

Last modified

2026-10-23

Weaknesses

CWE-94

Affected products

• Datamodel-code-generator (Koxudaxi)

References

• https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-8m8r-38jm-f355
• https://github.com/koxudaxi/datamodel-code-generator/commit/a43d02906111a2fdcaf13ee5b62eb2da85376f19
• https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2