Vulnerability · Published Jul 28, 2026 · Assigned by GitHub_M
CVE-2026-55415datamodel-code-generator vulnerable to code injection via `x-python-import` / `customTypePath` in generated import statements
High 7.5
In plain English
A high-severity code injection in datamodel-code-generator from koxudaxi. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% 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 0.11.6 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | datamodel-code-generator | 0.64.0 | GHSA-5578-w22f-pfx9 |
| PyPI | datamodel-code-generator | 0.64.0 | PYSEC-2026-3557 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| koxudaxi | datamodel-code-generator | >= 0.11.6, < 0.64.0 |
Weakness: CWE-94, CWE-95 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-5578-w22f-pfx9 x_refsource_CONFIRM
- https://github.com/koxudaxi/datamodel-code-generator/commit/577d49569c2254c371a97e495020ae2238a73b84 x_refsource_MISC
- https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.64.0 x_refsource_MISC