In openapi-python-client before version 0.5.3, clients generated with a maliciously crafted OpenAPI Document can generate arbitrary Python code. Subsequent execution of this malicious client is arbitrary code execution.
https://pypi.org/project/openapi-python-client/
https://github.com/triaxtec/openapi-python-client/security/advisories/GHSA-9x4c-63pf-525f
https://github.com/triaxtec/openapi-python-client/commit/f7a56aae32cba823a77a84a1f10400799b19c19a
https://github.com/triaxtec/openapi-python-client/blob/main/CHANGELOG.md#053---2020-08-13
Published: 2020-08-14
Updated: 2026-06-17
Base Score: 6
Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P
Severity: Medium
Base Score: 9
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Severity: Critical
Base Score: 8.8
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Severity: High
EPSS: 0.00757