High
datamodel-code-generator vulnerable to arbitrary local file read via JSON-Schema `$ref` (`file://` and `../` traversal), bypassing `--no-allow-remote-refs`
Type: advisorySources: OSV
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 $ref targets in src/datamodel_code_generator/parser/jsonschema.py through is_url and _get_ref_body without containing file:// or ../ traversal references to the input directory and without honoring --no-allow-remote-refs, allowing arbitrary local file reads. This issue is fixed in version 0.62.0.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-55389
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 13:25 UTC · Revision 1
Source evidence
datamodel-code-generator vulnerable to arbitrary local file read via JSON-Schema `$ref` (`file://` and `../` traversal), bypassing `--no-allow-remote-refs`
core-osv · Original sourcePublished 28 Jul 2026, 21:49 UTC
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 $ref targets in src/datamodel_code_generator/parser/jsonschema.py through is_url and _get_ref_body without containing file:// or ../ traversal references to the input directory and without honoring --no-allow-remote-refs, allowing arbitrary local file reads. This issue is fixed in version 0.62.0.
osv:CVE-2026-55389
Complete source record
{
"id": "d87eda600506e78db2437cafdf0b51ff8ff659ba96432f574ed3ced8a0cc9b61",
"url": "https://osv.dev/vulnerability/CVE-2026-55389",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "datamodel-code-generator vulnerable to arbitrary local file read via JSON-Schema `$ref` (`file://` and `../` traversal), bypassing `--no-allow-remote-refs`",
"summary": "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.",
"evidence": "osv:CVE-2026-55389",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-55389",
"aliases": [
"CVE-2026-55389",
"GHSA-8359-h9fx-j6v9",
"PYSEC-2026-3558"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
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"type": "GIT",
"events": [
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{
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"range": [
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{
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],
"source": "CPE_RANGE"
},
{
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"source": "REFERENCES_COMMIT"
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}
}
],
"modified": "2026-10-28T02:30:35.741447152Z",
"provider": "osv",
"references": [
"https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.62.0",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55389.json",
"https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-8359-h9fx-j6v9",
"https://nvd.nist.gov/vuln/detail/CVE-2026-55389",
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}
},
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{
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 503079,
"published_at": "2026-07-28T21:49:21.26+00:00"
}