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 products
koxudaxi: datamodel-code-generator
References4
- github.com/koxudaxi/datamodel-code-generator/security/advisorie… ExploitVendor Advisory
- github.com/koxudaxi/datamodel-code-generator/commit/17fc235e234… Patch
- github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2 Release Notes
- gist.github.com/thegr1ffyn/9648b0fe4fcf7d569ac8e61dd11eebaf Third Party Advisory
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 54 · as of 13 November 2026
- CWE
- CWE-94CWE-1336
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.