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Vulnerability record · CVE-2026-54654 · published 28 July 2026

CVE-2026-54654: Code injection vulnerability

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.

7.8 CVSS 3.1 High EPSS 0.21% · top 89.9% CWE-94 · Code injectionCWE-1336 · CWE-1336 Deferred
7.8CVSS 3.1 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
30 Jul 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

LinkTags
https://github.com/koxudaxi/datamodel-code-generator/commit/b73abb5cd703a50471b8950bbd3bd0b82ad71de7
https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2
https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-wjv6-jcfj-mf9r
https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-wjv6-jcfj-mf9r

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Source: NIST National Vulnerability Database (record CVE-2026-54654), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.