CVE-2026-54653Public exploitNetwork attack vector

Code execution via unvalidated default_factory expression

Published Jul 28, 2026 · Updated Jul 28, 2026

Code injection in datamodel-code-generator 0.17.0 through 0.60.1 allows remote attackers to execute Python code via a crafted schema. The JSON Schema parser preserves default_factory in field extras, and Pydantic, dataclass, and msgspec renderers interpolate it without quoting or validation. Execution occurs when a developer or CI pipeline imports the generated module; TypedDict output drops the value and is not affected.

CVSS severity8.8
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in datamodel-code-generator 0.17.0 through 0.60.1 allows remote attackers to execute Python code via a crafted schema. The JSON Schema parser preserves default_factory in field extras, and Pydantic, dataclass, and msgspec renderers interpolate it without quoting or validation. Execution occurs when a developer or CI pipeline imports the generated module; TypedDict output drops the value and is not affected.

The record

CVE
CVE-2026-54653
Published
Jul 28, 2026
Updated
Jul 28, 2026
Vendor
koxudaxi
Product
datamodel-code-generator
Classifications
CWE-1336, CWE-94, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.17.0, < 0.60.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

koxudaxi · datamodel-code-generatorversion=>= 0.17.0, < 0.60.2

Published CVSS scores

8.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1336Improper Neutralization of Special Elements Used in a Template Engine
CWE-94Improper Control of Generation of Code ('Code Injection')
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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