Vulnerability · Published Jul 28, 2026 · Assigned by GitHub_M
CVE-2026-54654`datamodel-code-generator` vulnerable to code injection via unescaped carriage return in `--extra-template-data` `comment` field
High 7.8
In plain English
A high-severity code injection in datamodel-code-generator from koxudaxi. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | datamodel-code-generator | 0.60.2 | GHSA-wjv6-jcfj-mf9r |
| PyPI | datamodel-code-generator | 0.60.2 | PYSEC-2026-3566 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| koxudaxi | datamodel-code-generator | >= 0.14.1, < 0.60.2 |
Weakness: CWE-94, CWE-1336 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-wjv6-jcfj-mf9r x_refsource_CONFIRM
- https://github.com/koxudaxi/datamodel-code-generator/commit/b73abb5cd703a50471b8950bbd3bd0b82ad71de7 x_refsource_MISC
- https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2 x_refsource_MISC