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OpenAdvisories
High · 7.8 CVE-2026-54654 EUVD-2026-50067GHSA-wjv6-jcfj-mf9rPYSEC-2026-3566

`datamodel-code-generator` vulnerable to code injection via unescaped carriage return in `--extra-template-data` `comment` field

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

Description

datamodel-code-generator generates Python data models from schema definitions. From 0.14.1 until 0.60.2, the --extra-template-data comment field is rendered into Python comments in src/datamodel_code_generator/model/template/TypeAliasAnnotation.jinja2, src/datamodel_code_generator/model/template/TypedDict.jinja2, src/datamodel_code_generator/model/template/dataclass.jinja2, src/datamodel_code_generator/model/template/msgspec.Struct.jinja2, src/datamodel_code_generator/model/template/pydantic/BaseModel.jinja2, and src/datamodel_code_generator/model/template/pydantic_v2/BaseModel.jinja2 without neutralizing carriage returns in Python # comments, allowing an attacker-controlled comment value to inject Python code into generated models that runs when imported. This issue is fixed in version 0.60.2.

Affected products

VendorProductAffectedFixed
koxudaxi datamodel-code-generator >= 0.14.1, < 0.60.2 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI datamodel-code-generator >= 0.14.1, < 0.60.2 0.60.2 GHSA-wjv6-jcfj-mf9r

References