Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Koxudaxi | Datamodel-Code-Generator | >= 0.52.1, < 0.60.2 |
Related Weaknesses (CWE)
References
- https://github.com/koxudaxi/datamodel-code-generator/commit/a43d02906111a2fdcaf1Patch
- https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2Release Notes
- https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-8mExploitVendor Advisory
- https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-8mExploitVendor Advisory
FAQ
What is CVE-2026-54656?
CVE-2026-54656 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2026-54656?
CVE-2026-54656 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54656?
Check the references section above for vendor advisories and patch information. Affected products include: Koxudaxi Datamodel-Code-Generator.