CVE-2026-55389 datamodel-code-generator vulnerable to arbitrary local file read via JSON-Schema `$ref` (`file://` and `../` traversal), bypassing `--no-allow-remote-refs`

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. Prior to 0.62.0, datamodel-code-generator resolves JSON Schema $ref targets in...

`datamodel-code-generator` vulnerable to code injection in via attacker-controlled `default_factory` schema field

Summary datamodel-code-generator is vulnerable to code injection when generating Python models from an attacker-controlled JSON Schema, OpenAPI, YAML, JSON, Avro, Protobuf, or XSD schema. When a property carries a "defaultfactory" key, its value is interpolated verbatim — as a raw Python expressi...

Improper Neutralization of Special Elements Used in a Template Engine

Overview datamodel-code-generator is a Datamodel Code Generator Affected versions of this package are vulnerable to Improper Neutralization of Special Elements Used in a Template Engine via the defaultfactory field in schema input. An attacker can execute arbitrary Python code in the consumer's...

CVE-2026-54653

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 defaultfactory values in...

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

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 defaultfactory values in...

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

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 defaultfactory values in...

EUVD-2026-50077

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 defaultfactory values in...

CVE-2026-54653

The CVE affects the datamodel-code-generator project. From versions 0.17.0 through 0.60.2, the tool could preserve attacker-controlled default_factory values in JsonSchemaObject.init/get_field_extras, emitting them into Field(default_factory=...) and enabling Python expression execution when the ...

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

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 defaultfactory values in...

GHSA-VX7X-VCC2-C44G datamodel-code-generator vulnerable to SSRF protection bypass via DNS rebinding

Summary datamodel-code-generator's anti-SSRF guard validates the resolved IP of a fetch target once and then lets httpx perform its own independent DNS resolution to connect, so the validated address is never pinned. A hostname that resolves to a public IP at validation time and a private IP at...

Server-side Request Forgery (SSRF)

Overview datamodel-code-generator is a Datamodel Code Generator Affected versions of this package are vulnerable to Server-side Request Forgery SSRF through the getbody function, which performs DNS resolution validation separately from the actual HTTP connection. An attacker can access internal...

datamodel-code-generator vulnerable to SSRF protection bypass via DNS rebinding

Summary datamodel-code-generator's anti-SSRF guard validates the resolved IP of a fetch target once and then lets httpx perform its own independent DNS resolution to connect, so the validated address is never pinned. A hostname that resolves to a public IP at validation time and a private IP at...

CVE-2026-55391 datamodel-code-generator vulnerable to SSRF protection bypass via DNS rebinding

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. Prior to 0.63.0, datamodel-code-generator validates a URL host once in src/datamodelcodegenerator/http.py through...

CVE-2026-55391

CVE-2026-55391 affects the datamodel-code-generator project. Prior to version 0.63.0, the tool validates a URL host in http.py via get_body, _validate_url_for_fetch, and _get_ips_from_host, but then allows httpx to resolve the host again for the connection, enabling DNS rebinding to bypass allow_...

EUVD-2026-50076

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. Prior to 0.63.0, datamodel-code-generator validates a URL host once in src/datamodelcodegenerator/http.py through...

CVE-2026-55391 datamodel-code-generator vulnerable to SSRF protection bypass via DNS rebinding

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. Prior to 0.63.0, datamodel-code-generator validates a URL host once in src/datamodelcodegenerator/http.py through...

CVE-2026-55391 datamodel-code-generator vulnerable to SSRF protection bypass via DNS rebinding

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. Prior to 0.63.0, datamodel-code-generator validates a URL host once in src/datamodelcodegenerator/http.py through...

GHSA-8M8R-38JM-F355 `datamodel-code-generator` vulnerable to code execution on import via unescaped `validators` entries in --extra-template-data

Summary When the Pydantic v2 output mode is in use, datamodel-code-generator reads a validators array from each model entry in the --extra-template-data file and synthesises a Pydantic @fieldvalidator... decorator from each entry. The field names and the validator mode are interpolated into the...

Arbitrary Code Injection

Overview datamodel-code-generator is a Datamodel Code Generator Affected versions of this package are vulnerable to Arbitrary Code Injection via the validators processing in the --extra-template-data file. An attacker can execute arbitrary code during module import by supplying specially crafted...

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

Summary When the Pydantic v2 output mode is in use, datamodel-code-generator reads a validators array from each model entry in the --extra-template-data file and synthesises a Pydantic @fieldvalidator... decorator from each entry. The field names and the validator mode are interpolated into the...