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CVE-2026-55391

Estado: AnalizadaAlta (7.5)—

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/datamodel_code_generator/http.py through get_body, _validate_url_for_fetch, and _get_ips_from_host, but then lets httpx resolve the host again for the connection, allowing DNS rebinding to bypass allow_private_network=False and reach internal services. This issue is fixed in version 0.63.0.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

DNS rebinding en aplicación expuesta (datamodel-code-generator) que valida URL una sola vez pero permite resolución posterior, causando acceso a servicios internos (SSRF) y potencial lectura de datos. AV:N, PR:N, CWE-918.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficVulnerability ScanningSSL/TLS InspectionPrivileged Account ManagementNetwork SegmentationNetwork Intrusion Prevention

Tecnologías afectadas (1)

Koxudaxi — Datamodel-code-generator

CWE

Referencias

JSON original (NVD)

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            },
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          "version": "2.0.3",
          "timestamp": "2026-07-29T13:29:52.729955Z"
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          "userInteraction": "NONE",
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          "privilegesRequired": "NONE",
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  "lastModified": "2026-08-06T19:43:58.453",
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