CVE-2026-54656 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-54656HIGH

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

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  H  H  H    7.8   .0017    6.8     —

AFFECTED
  Product                   Versions               Fixed
  datamodel-code-generator  >= 0.52.1, < 0.60.2 –  —

TIMELINE
  Jun 15  Reserved by GitHub_M
  Jul 28  EXPLOIT PUBLISHED — CVE-2026-54656 (koxudaxi datamodel-code-generator). Public exploit reference added.
  Jul 28  Published (CNA: GitHub_M)
  Aug 6   EXPLOIT PUBLISHED — CVE-2026-54656 (koxudaxi datamodel-code-generator). Public exploit reference added.

CWE-94 · CNA: GitHub_M · CVSS v3.1 · 3 references · NVD status: Analyzed

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. From 0.52.1 until 0.60.2, datamodel-code-generator interpolates validators from --extra-template-data in src/datamodel_code_generator/model/pydantic_v2/base_model.py through _process_validators into @field_validator decorators without safe validation, allowing Python code execution when the generated Pydantic v2 model is imported. This issue is fixed in version 0.60.2.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
June 15, 2026	Reserved	Reserved by GitHub_M
July 28, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-54656 (koxudaxi datamodel-code-generator). Public exploit reference added.
July 28, 2026	Published	Published (CNA: GitHub_M)
August 6, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-54656 (koxudaxi datamodel-code-generator). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
koxudaxi	datamodel-code-generator	—	>= 0.52.1, < 0.60.2	—

Weaknesses

CWE-94

References (3)

https://github.com/koxudaxi/datamodel-code-generator/commit/a43d02906111a2fdcaf13ee5b62eb2da85376f19 [Patch]
https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.2 [Release Notes]
https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-8m8r-38jm-f355 [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-54656 at cve.org

Vendors: koxudaxi

Weaknesses: CWE-94

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-54656 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.