`datamodel-code-generator` vulnerable to code injection via unescaped carriage return in GraphQL Union description

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-54621
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-28 22:17:39 UTC
Updated2026-07-30 20:02:12 UTC
Descriptiondatamodel-code-generator generates Python data models from schema definitions. Prior to 0.60.1, GraphQL Union description values in src/datamodel_code_generator/model/template/UnionTypeStatement.jinja2 and src/datamodel_code_generator/model/template/UnionTypeStatement.py312.jinja2 are rendered into Python comments without neutralizing carriage returns in Python # comments, allowing attacker-controlled GraphQL schema content to inject Python code into generated models that runs when imported. This issue is fixed in version 0.60.1.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

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

EPSS: 0.001420000 probability, percentile 0.039750000 (date 2026-08-03)

Problem Types: CWE-94 | CWE-1336 | CWE-94 CWE-94: Improper Control of Generation of Code ('Code Injection') | CWE-1336 CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Koxudaxi Datamodel-code-generator affected >= 0.25.0, < 0.60.1 Not specified

References

ReferenceSourceLinkTags
github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-j8... [email protected] github.com
github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.1 [email protected] github.com
github.com/koxudaxi/datamodel-code-generator/commit/aec47bc414779f4a9992... [email protected] github.com
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