openapi-python-client Arbitrary Code Generation vulnerability
Impact
Clients generated with a maliciously crafted OpenAPI Document can generate arbitrary Python code. Subsequent execution of this malicious client is arbitrary code execution.
Giving this a CVSS of 8.0 (high) with CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H/E:P/RL:U/RC:C .
Patches
Fix will be included in version 0.5.3
Workarounds
Inspect OpenAPI documents before generating, or inspect generated code before executing.
For more information
If you have any questions or comments about this advisory:
- Open an issue in openapi-python-client
- Email us at danthony@triaxtec.com
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | openapi-python-client | < 0.5.3 | 0.5.3 |
References
- https://github.com/triaxtec/openapi-python-client/blob/main/CHANGELOG.md#053---2020-08-13
- https://pypi.org/project/openapi-python-client/
- https://github.com/triaxtec/openapi-python-client/commit/f7a56aae32cba823a77a84a1f10400799b19c19a
- https://github.com/triaxtec/openapi-python-client/security/advisories/GHSA-9x4c-63pf-525f
- https://nvd.nist.gov/vuln/detail/CVE-2020-15142
- https://github.com/openapi-generators/openapi-python-client/commit/f7a56aae32cba823a77a84a1f10400799b19c19a
- https://github.com/openapi-generators/openapi-python-client
- https://github.com/openapi-generators/openapi-python-client/releases/tag/v.0.5.3
- https://github.com/pypa/advisory-database/tree/main/vulns/openapi-python-client/PYSEC-2020-71.yaml
- https://pypi.org/project/openapi-python-client
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H- Weakness (CWE)
CWE-94- Platform
- Python (PyPI)
- Package
openapi-python-client- Disclosed
- 14.08.2020
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2020-71 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-9x4c-63pf-525f - CC BY 4.0
Vulnerability history: openapi-python-client
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 08.2020 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Low 1
Disclosures per year
- 2020: 2
- 2021: 0
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 1
-
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