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CVE-2026-105801— openapi-python-client: Malicious OpenAPI Documents can cause Arbitrary Code Generation

Quick assessment

Affected
openapi-generators openapi-python-client
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

openapi-python-client 是一款根据 OpenAPI 文档生成 Python 客户端的代码生成工具。在版本 0.29.1 之前，该生成器在生成的 Python 代码中渲染字符串、文档字符串（docstring）及 f-string 上下文时，未能安全地消除恶意的 OpenAPI 文档内容。这可能导致生成的 Python 客户端中包含由攻击者控制的恶意代码，这些代码会在用户导入该客户端时执行，从而危及导入环境的完整性，并可能影响其机密性和可用性。该问题已在版本 0.29.1 中得到修复。

CVSS 8.4 · High

Possible ATT&CK Techniques 1 AI

T1195.002 · Compromise Software Supply Chain
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I. Basic Information for CVE-2026-105801

Vulnerability Information
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Vulnerability Title
openapi-python-client: Malicious OpenAPI Documents can cause Arbitrary Code Generation
Source: CVE Program / CVE List V5
Vulnerability Description
openapi-python-client generates Python clients from OpenAPI documents. Prior to 0.29.1, the generator does not safely neutralize malicious OpenAPI document content before rendering string, docstring, and f-string contexts in generated Python. The generated Python client can contain attacker-controlled Python that executes when a user imports the client, affecting the importing environment's integrity and potentially its confidentiality and availability. This issue is fixed in version 0.29.1.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
openapi-generators openapi-python-client < 0.29.1 -

II. Public POCs for CVE-2026-105801

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III. Intelligence Information for CVE-2026-105801

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Other References for CVE-2026-105801 (4)

IV. Related Vulnerabilities

Same product: openapi-python-client
Same weakness: CWE-94

V. Comments for CVE-2026-105801

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