CVE-2026-54653
`datamodel-code-generator` vulnerable to code injection in via attacker-controlled `default_factory` schema field
- State
- Published
- Severity
- 8.8 High
- Published
- Jul 28, 2026
- Updated
- Jul 29, 2026
- Reserved
- Jun 15, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
datamodel-code-generatorkoxudaxi |
|
References
- https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-386q-5hp3-95m9
- https://github.com/koxudaxi/datamodel-code-generator/commit/17fc235e234cbcfaaadef8c74cb72c9687db0d1d
- https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2
- https://gist.github.com/thegr1ffyn/9648b0fe4fcf7d569ac8e61dd11eebafexploit
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