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CVE-2026-54656— `datamodel-code-generator` vulnerable to code execution on import via unescaped `validators` entries in --extra-template-data

CVSS 7.8 · High EPSS 0.17% · P7

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProductVersion RangeStatus
koxudaxidatamodel-code-generator>= 0.52.1, < 0.60.2affected
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I. Basic Information for CVE-2026-54656

Vulnerability Information
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Vulnerability Title
`datamodel-code-generator` vulnerable to code execution on import via unescaped `validators` entries in --extra-template-data
Source: CVE Program / CVE List V5
Vulnerability 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 0.52.1 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Koudai Aono datamodel-code-generator 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Koudai Aono datamodel-code-generator是日本Koudai Aono个人开发者的一款数据模型代码生成器。 Koudai Aono datamodel-code-generator 0.52.1版本至0.60.2之前版本存在代码注入漏洞，该漏洞源于对--extra-template-data中验证器的插值未进行安全验证，允许导入生成的Pydantic v2模型时执行Python代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
koxudaxidatamodel-code-generator >= 0.52.1, < 0.60.2 -

II. Public POCs for CVE-2026-54656

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 5409 chars
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III. Intelligence Information for CVE-2026-54656

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Vendor Advisories for CVE-2026-54656 (1)

Vendor Pages for CVE-2026-54656 (1)

Same Patch Batch · koxudaxi · 2026-07-28 · 12 CVEs total

CVE-2026-546538.8 HIGH`datamodel-code-generator` vulnerable to code injection in via attacker-controlled `defaul
CVE-2026-546918.2 HIGHdatamodel-code-generator vulnerable to SSRF via --url: no host/IP validation, follows redi
CVE-2026-546908.2 HIGHdatamodel-code-generator vulnerable to SSRF via JSON-Schema `$ref` to HTTP URL (silent by
CVE-2026-546547.8 HIGH`datamodel-code-generator` vulnerable to code injection via unescaped carriage return in `
CVE-2026-546217.8 HIGH`datamodel-code-generator` vulnerable to code injection via unescaped carriage return in G
CVE-2026-546557.8 HIGH`datamodel-code-generator` vulnerable to code execution on import via `x-python-type` JSON
CVE-2026-553907.5 HIGHArbitrary local file read via XSD `schemaLocation` (`xs:include`/`xs:import`) path travers
CVE-2026-553917.5 HIGHdatamodel-code-generator vulnerable to SSRF protection bypass via DNS rebinding
CVE-2026-553897.5 HIGHdatamodel-code-generator vulnerable to arbitrary local file read via JSON-Schema `$ref` (`
CVE-2026-554157.5 HIGHdatamodel-code-generator vulnerable to code injection via `x-python-import` / `customTypeP
CVE-2026-554033.7 LOWdatamodel-code-generator: Authorization / request headers leaked to cross-origin redirect

IV. Related Vulnerabilities

Same product: datamodel-code-generator
Same vendor: koxudaxi
Same weakness: CWE-94

V. Comments for CVE-2026-54656

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