koxudaxi datamodel-code-generator up to 0.60.1 JSON Schema Parser jsonschema.py _get_python_type_override x-python-type code injection

Summaryinfo

A vulnerability has been found in koxudaxi datamodel-code-generator up to 0.60.1 and classified as critical. This affects the function _get_python_type_override of the file src/datamodel_code_generator/parser/jsonschema.py of the component JSON Schema Parser. The manipulation of the argument x-python-type leads to code injection. This vulnerability is listed as CVE-2026-54655. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in koxudaxi datamodel-code-generator up to 0.60.1. This issue affects the function _get_python_type_override of the file src/datamodel_code_generator/parser/jsonschema.py of the component JSON Schema Parser. The manipulation of the argument x-python-type with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-54655 since 06/15/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

Upgrading to version 0.60.2 eliminates this vulnerability.

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Productinfo

Vendor

• koxudaxi

Name

• datamodel-code-generator

Version

• 0.60.0
• 0.60.1

Website

• Product: https://github.com/koxudaxi/datamodel-code-generator/

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CPE 2.2info

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