High severityNVD Advisory· Published Jul 28, 2026· Updated Jul 29, 2026
`datamodel-code-generator` vulnerable to code execution on import via unescaped `validators` entries in --extra-template-data
CVE-2026-54656
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
datamodel-code-generatorPyPI | >= 0.52.1, < 0.60.2 | 0.60.2 |
Affected products
1- Range: 0.52.1 to 0.60.1
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-8m8r-38jm-f355ghsaADVISORY
- github.com/koxudaxi/datamodel-code-generator/commit/a43d02906111a2fdcaf13ee5b62eb2da85376f19ghsax_refsource_MISCWEB
- github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2ghsax_refsource_MISCWEB
- github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-8m8r-38jm-f355ghsax_refsource_CONFIRMWEB
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