High severityNVD Advisory· Published Jul 28, 2026· Updated Jul 29, 2026
`datamodel-code-generator` vulnerable to code execution on import via `x-python-type` JSON-Schema extension in datamodel-code-generator
CVE-2026-54655
Description
datamodel-code-generator generates Python data models from schema definitions. From 0.51.0 until 0.60.2, x-python-type values parsed by src/datamodel_code_generator/parser/jsonschema.py in _get_python_type_override are inserted into generated field annotations without sufficient validation, allowing attacker-controlled JSON Schema content to execute Python code when the generated module 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 | >= 0.51.0, < 0.60.2 | 0.60.2 |
Affected products
2- Range: <=0.60.2
- Range: <=0.60.2
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-m34r-v34r-rf9qghsaADVISORY
- github.com/koxudaxi/datamodel-code-generator/commit/2c93c9b712f43391dcfa975a1e4aa0b7c93ccbbaghsax_refsource_MISCWEB
- github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2ghsax_refsource_MISCWEB
- github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-m34r-v34r-rf9qghsax_refsource_CONFIRMWEB
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