CVE-2026-55415
datamodel-code-generator vulnerable to code injection via `x-python-import` / `customTypePath` in generated import statements
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 0.11.6 until 0.64.0, datamodel-code-generator allows attacker-controlled x-python-import or customTypePath schema extensions to reach src/datamodel_code_generator/parser/jsonschema.py and generated import handling through Import.from_full_path and Imports.create_line in src/datamodel_code_generator/imports.py, allowing a newline to break out of an import statement and execute Python code when the generated model is imported. This issue is fixed in version 0.64.0.
- Affected
- koxudaxi · datamodel-code-generator
- CVSS v3.1 GITHUB
- 7.5 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS
- 0.49% chance of exploitation in the next 30 days, 41st percentile
- Published
- 2026-07-28
- Updated
- 2026-07-29
Proof-of-concept exploits (1)
Security advisories
- koxudaxi/datamodel-code-generator/security/advisories/GHSA-5578-w22f-pfx9
- koxudaxi/datamodel-code-generator/commit/577d49569c2254c371a97e495020ae2238a73b84