openapi-python-client: Malicious OpenAPI Documents can cause Arbitrary Code Generation
Impact
A malicious OpenAPI document processed by any openapi-python-client prior to 0.29.1 can generate arbitrary Python code. When anyone imports the malicious client, that arbitrary Python code will execute.
Patches
Versions starting with 0.29.1 have updated with guardrails to prevent arbitrary code generation. Upgrade to this version immediately and audit any code previously generated from untrusted documents.
Workarounds
Do not generate clients for documents you don't completely trust. Carefully verify any existing generated code from untrusted documents.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | openapi-python-client | < 0.29.1 | 0.29.1 |
References
- https://github.com/openapi-generators/openapi-python-client/security/advisories/GHSA-5293-mq8x-g3xj
- https://nvd.nist.gov/vuln/detail/CVE-2026-105801
- https://github.com/openapi-generators/openapi-python-client/pull/1483
- https://github.com/openapi-generators/openapi-python-client/commit/1c99af478892e5bbe6583b92acba431c9dec9186
- https://github.com/openapi-generators/openapi-python-client
- https://github.com/openapi-generators/openapi-python-client/releases/tag/v0.29.1
- https://pypi.org/project/openapi-python-client
- https://github.com/advisories/GHSA-5293-mq8x-g3xj
- CVSS vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H- Weakness (CWE)
CWE-116, CWE-150, CWE-94- Platform
- Python (PyPI)
- Package
openapi-python-client- Disclosed
- 06.10.2026
- Updated
- 15.10.2026 18:17
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-4245 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-5293-mq8x-g3xj - 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
-
openapi-python-client: Malicious OpenAPI Documents can cause Arbitrary Code Generation this entry
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