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

CVE ID :CVE-2026-55389

Published : July 28, 2026, 10:17 p.m. | 22 minutes ago

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. Prior to 0.62.0, datamodel-code-generator resolves JSON Schema $ref targets in src/datamodel_code_generator/parser/jsonschema.py through is_url and _get_ref_body without containing file:// or ../ traversal references to the input directory and without honoring –no-allow-remote-refs, allowing arbitrary local file reads. This issue is fixed in version 0.62.0.

Severity: 7.5 | HIGH

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