Vulnerability · Published Jul 28, 2026 · Assigned by GitHub_M
CVE-2026-54655`datamodel-code-generator` vulnerable to code execution on import via `x-python-type` JSON-Schema extension in datamodel-code-generator
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 0.51.0 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | datamodel-code-generator | 0.60.2 | GHSA-m34r-v34r-rf9q |
| PyPI | datamodel-code-generator | 0.60.2 | PYSEC-2026-3562 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| koxudaxi | datamodel-code-generator | >= 0.51.0, < 0.60.2 |
Weakness: CWE-94 · 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-m34r-v34r-rf9q x_refsource_CONFIRM
- https://github.com/koxudaxi/datamodel-code-generator/commit/2c93c9b712f43391dcfa975a1e4aa0b7c93ccbba x_refsource_MISC
- https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2 x_refsource_MISC