Vulnerability · Published Jul 28, 2026 · Assigned by GitHub_M
CVE-2026-54621`datamodel-code-generator` vulnerable to code injection via unescaped carriage return in GraphQL Union description
High 7.8
In plain English
A high-severity code injection in datamodel-code-generator from koxudaxi. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
datamodel-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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | datamodel-code-generator | 0.60.1 | GHSA-j884-q54q-mmx3 |
| PyPI | datamodel-code-generator | 0.60.1 | PYSEC-2026-3561 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| koxudaxi | datamodel-code-generator | >= 0.25.0, < 0.60.1 |
Weakness: CWE-94, CWE-1336 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-j884-q54q-mmx3 x_refsource_CONFIRM
- https://github.com/koxudaxi/datamodel-code-generator/commit/aec47bc414779f4a9992b3919c8f7663afd6c988 x_refsource_MISC
- https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.60.1 x_refsource_MISC