koxudaxi datamodel-code-generator up to 0.60.0 Union Type Template Rendering UnionTypeStatement.py312.jinja2 code injection

Summaryinfo

A vulnerability, which was classified as problematic, was found in koxudaxi datamodel-code-generator up to 0.60.0. Affected by this issue is some unknown functionality of the file src/datamodel_code_generator/model/template/UnionTypeStatement.jinja2/src/datamodel_code_generator/model/template/UnionTypeStatement.py312.jinja2 of the component Union Type Template Rendering. Executing a manipulation can lead to code injection. This vulnerability is tracked as CVE-2026-54621. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in koxudaxi datamodel-code-generator up to 0.60.0. This vulnerability affects some unknown functionality of the file src/datamodel_code_generator/model/template/UnionTypeStatement.jinja2/src/datamodel_code_generator/model/template/UnionTypeStatement.py312.jinja2 of the component Union Type Template Rendering. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity, and availability. CVE summarizes:

datamodel-code-generator generates Python data models from schema definitions. Prior to 0.60.1, GraphQL Union description values in src/datamodel_code_generator/model/template/UnionTypeStatement.jinja2 and src/datamodel_code_generator/model/template/UnionTypeStatement.py312.jinja2 are rendered into Python comments without neutralizing carriage returns in Python # comments, allowing attacker-controlled GraphQL schema content to inject Python code into generated models that runs when imported. This issue is fixed in version 0.60.1.

The advisory is available at github.com. This vulnerability was named CVE-2026-54621 since 06/15/2026. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Upgrading to version 0.60.1 eliminates this vulnerability.

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Productinfo

Vendor

• koxudaxi

Name

• datamodel-code-generator

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33
• 0.34
• 0.35
• 0.36
• 0.37
• 0.38
• 0.39
• 0.40
• 0.41
• 0.42
• 0.43
• 0.44
• 0.45
• 0.46
• 0.47
• 0.48
• 0.49
• 0.50
• 0.51
• 0.52
• 0.53
• 0.54
• 0.55
• 0.56
• 0.57
• 0.58
• 0.59
• 0.60.0

Website

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

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