CVE-2026-55415: 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. Fr

highCVSS 7.5CVE-2026-55415

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 0.11.6 until 0.64.0, datamodel-code-generator allows attacker-controlled x-python-import or customTypePath schema extensions to reach src/datamodel_code_generator/parser/jsonschema.py and generated import handling through Import.from_full_path and Imports.create_line in src/datamodel_code_generator/imports.py, allowing a newline to break out of an import statement and execute Python code when the generated model is imported. This issue is fixed in version 0.64.0.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: high — CVSS 7.5
Published: 2026-07-28
Last updated: 2026-07-30
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-55415

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-554150.28% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 20% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-55415	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

highGHSA-5578-w22f-pfx9: datamodel-code-generator vulnerable to code injection via `x-python-import` / `customType…ghsa

Recent advisories for datamodel-code-generator generates Pydantic

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-55391: datamodel-code-generator generates Pydantic v2 models, dataclasses, TypedDict, and msgspec.Str…nvd · 2026-07-28
highCVE-2026-55389: datamodel-code-generator generates Pydantic v2 models, dataclasses, TypedDict, and msgspec.Str…nvd · 2026-07-28
highCVE-2026-54690: datamodel-code-generator generates Pydantic v2 models, dataclasses, TypedDict, and msgspec.Str…nvd · 2026-07-28
highCVE-2026-54656: datamodel-code-generator generates Pydantic v2 models, dataclasses, TypedDict, and msgspec.Str…nvd · 2026-07-28
highCVE-2026-54653: datamodel-code-generator generates Pydantic v2 models, dataclasses, TypedDict, and msgspec.Str…nvd · 2026-07-28