RCE in Koxudaxi Datamodel-Code-Generator
CVE-2026-54656
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 0.52.1 until 0.60.2, datamodel-code-generator interpolates validators from --extra-template-data in src/datamodel_code_generator/model/pydantic_v2/base_model.py through _process_validators into @field_validator decorators without safe validation, allowing Python code execution when the generated Pydantic v2 model is imported. This issue is fixed in version 0.60.2.
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.002 (13.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Koxudaxi Datamodel-code-generator — versions >= 0.52.1, < 0.60.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-54656?
- CVE-2026-54656 is a high-severity vulnerability in Koxudaxi Datamodel-Code-Generator, classified under Code Injection. CVSS score: 7.8/10. Published 2026-07-28.
- How severe is CVE-2026-54656?
- High severity. CVSS v3 base score is 7.8 out of 10.