Vulnerability · Published Jul 28, 2026 · Assigned by GitHub_M
CVE-2026-54653`datamodel-code-generator` vulnerable to code injection in via attacker-controlled `default_factory` schema field
High 8.8
In plain English
A high-severity code injection in datamodel-code-generator from koxudaxi. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
datamodel-code-generator generates Pydantic v2 models, dataclasses, TypedDict, and msgspec.Struct from OpenAPI, JSON Schema, GraphQL, Avro, Protobuf, and raw JSON, YAML, or CSV. From 0.17.0 until 0.60.2, datamodel-code-generator preserves attacker-controlled default_factory values in src/datamodel_code_generator/parser/jsonschema.py through JsonSchemaObject.init and get_field_extras and emits them into Field(default_factory=...) or field(default_factory=...), allowing Python expression execution when the generated model 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-386q-5hp3-95m9 |
| PyPI | datamodel-code-generator | 0.60.2 | PYSEC-2026-3555 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| koxudaxi | datamodel-code-generator | >= 0.17.0, < 0.60.2 |
Weakness: CWE-94, CWE-1336 · Vector: CVSS:3.1/AV:N/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-386q-5hp3-95m9 x_refsource_CONFIRM
- https://github.com/koxudaxi/datamodel-code-generator/commit/17fc235e234cbcfaaadef8c74cb72c9687db0d1d x_refsource_MISC
- https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2 x_refsource_MISC
- https://gist.github.com/thegr1ffyn/9648b0fe4fcf7d569ac8e61dd11eebaf exploit