CVE-2026-42234— n8n: Python Task Runner Sandbox Escape
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I. Basic Information for CVE-2026-42234
Vulnerability Information
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Vulnerability Title
n8n: Python Task Runner Sandbox Escape
Source: NVD (National Vulnerability Database)
Vulnerability Description
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an authenticated user with permission to create or modify workflows containing a Python Code Node could escape the sandbox and achieve arbitrary code execution on the task runner container. This issue only affects instances where the Python Task Runner is enabled. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
n8n 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n是n8n开源的一个可扩展的工作流自动化工具。 n8n 1.123.32之前版本、2.17.4之前版本和2.18.1之前版本存在代码注入漏洞，该漏洞源于包含Python Code Node的工作流中经过身份验证的用户可逃逸沙箱并在任务运行器容器上执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-42234
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- Python Task Runner Sandbox Escape · Advisory · n8n-io/n8n · GitHubx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-42234
Same Patch Batch · n8n-io · 2026-05-04 · 12 CVEs total
| CVE-2026-42232 | n8n: XML Node Prototype Pollution to RCE | |
| CVE-2026-42233 | n8n: SQL Injection in Oracle Database Node via Limit Field | |
| CVE-2026-42229 | n8n: SQL Injection in SeaTable Node | |
| CVE-2026-42228 | n8n: Hijacking of Unauthenticated Chat Execution | |
| CVE-2026-42235 | n8n: XSS via MCP OAuth client | |
| CVE-2026-42236 | n8n: Unauthenticated Denial of Service via MCP Client Registration | |
| CVE-2026-42237 | n8n: SQL Injection in Snowflake and MySQL Nodes | |
| CVE-2026-42226 | n8n: Credential Authorization Bypass in dynamic-node-parameters Allows Foreign API Key Rep | |
| CVE-2026-42230 | n8n: Open Redirect in MCP OAuth Consent Flow | |
| CVE-2026-42227 | n8n: Public API Variables IDOR Allows Cross-Project Secret Disclosure | |
| CVE-2026-42231 | n8n: Prototype Pollution in XML Webhook Body Parser Leads to RCE |
IV. Related Vulnerabilities
Same product: n8n
- CVE-2026-42237
n8n: SQL Injection in Snowflake and MySQL Nodes - CVE-2026-42236
n8n: Unauthenticated Denial of Service via MCP Client Regist - CVE-2026-42235
n8n: XSS via MCP OAuth client - CVE-2026-42233
n8n: SQL Injection in Oracle Database Node via Limit Field - CVE-2026-42232
n8n: XML Node Prototype Pollution to RCE
Same vendor: n8n-io
- CVE-2026-42237
n8n: SQL Injection in Snowflake and MySQL Nodes - CVE-2026-42236
n8n: Unauthenticated Denial of Service via MCP Client Regist - CVE-2026-42235
n8n: XSS via MCP OAuth client - CVE-2026-42233
n8n: SQL Injection in Oracle Database Node via Limit Field - CVE-2026-42232
n8n: XML Node Prototype Pollution to RCE
Same weakness: CWE-94
- CVE-2021-47939
Evolution CMS 3.1.6 Authenticated Remote Code Execution via - CVE-2021-47938
ImpressCMS 1.4.2 Remote Code Execution via Autotasks - CVE-2021-47935
Sentry 8.2.0 Remote Code Execution via Pickle Deserializatio - CVE-2022-50944
Aero CMS 0.0.1 PHP Code Injection via posts.php - CVE-2026-8211
codelibs Fess JSP File AdminDesignAction.java update code in
V. Comments for CVE-2026-42234
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