What’s Vulnerable › Vulnerabilities

CVE-2026-54653: `datamodel-code-generator` vulnerable to code injection in via attacker-controlled `default_factory` schema field

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-07-28 · updated 2026-10-23
• Weakness: CWE-94

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: from 0.17.0 before 0.60.2 — fixed in 0.60.2

How to fix

Upgrade to a fixed version: koxudaxi datamodel-code-generator 0.60.2. Check the vendor advisory for mitigations.

References

• https://github.com/koxudaxi/datamodel-code-generator/commit/17fc235e234cbcfaaadef8c74cb72c9687db0d1d
• https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2
• https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-386q-5hp3-95m9
• https://gist.github.com/thegr1ffyn/9648b0fe4fcf7d569ac8e61dd11eebaf

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