CVE-2026-63471 fastapi-code-generator: Import-time RCE via route path -> unescaped @app.get('...') decorator
CriticalCVSS 9.3
EPSS 0.31%
- Published
- Updated
- Exploit status
- No public exploit known
Description
fastapi-code-generator creates FastAPI applications from OpenAPI files. Prior to 0.8.1, the generator inserts an OpenAPI path into a generated @app.get(...) route decorator as a single-quoted generated route string without escaping embedded quotes. An attacker-controlled or attacker-influenced OpenAPI path can close the string and inject a valid Python expression into the decorator argument. Syntax-breaking input only causes generation to fail, but syntactically valid generated code executes with the application's or CI process's privileges when the generated module is imported and the decorator is evaluated. This OpenAPI path sink is distinct from the project's separate operation-summary docstring and additional-response-key sinks. This issue is fixed in version 0.8.1.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pypi fastapi-code-generator(PyPI) | < 0.8.1 | 0.8.1 |
| pypi fastapi-code-generator(PyPI) | = 0.0.1 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.10 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.11 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.12 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.13 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.14 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.15 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.16 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.17 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.18 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.19 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.2 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.3 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.4 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.5 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.6 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.7 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.8 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.0.9 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.1.0 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.1.1 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.2.0 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.2.1 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.2.2 | No fix listed |
Show 27 more
| Product | Affected versions | Fixed in |
|---|---|---|
| pypi fastapi-code-generator(PyPI) | = 0.2.3 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.2.4 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.2.5 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.2.6 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.2.7 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.3.0 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.3.1 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.3.2 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.3.3 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.3.4 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.3.5 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.3.6 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.4.0 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.4.1 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.4.2 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.4.3 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.4.4 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.5.0 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.5.1 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.5.2 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.5.3 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.5.3rc0 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.5.4 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.6.0 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.7.0 | No fix listed |
| pypi fastapi-code-generator(PyPI) | = 0.8.0 | No fix listed |
| koxudaxi fastapi-code-generator | = < 0.8.1 | No fix listed |
References
- https://github.com/koxudaxi/fastapi-code-generator/security/advisories/GHSA-p2mm-64f6-gmpp exploit vendor-advisory
- nvd.nist.gov third-party-advisory vendor-advisory
- https://github.com/koxudaxi/fastapi-code-generator/commit/49301dbdb82170d7f50877419d994b05cb1fa2bc patch
- https://github.com/koxudaxi/fastapi-code-generator/commit/b3b9bd66e0b0c4d8c686fda700258104615a1332 patch
- github.com product
- https://github.com/koxudaxi/fastapi-code-generator/releases/tag/0.8.1
- github.com