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CVE-2026-27495— n8n has a Sandbox Escape in its JavaScript Task Runner

EPSS 0.10% · P28
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I. Basic Information for CVE-2026-27495

Vulnerability Information

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Vulnerability Title
n8n has a Sandbox Escape in its JavaScript Task Runner
Source: NVD (National Vulnerability Database)
Vulnerability Description
n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, an authenticated user with permission to create or modify workflows could exploit a vulnerability in the JavaScript Task Runner sandbox to execute arbitrary code outside the sandbox boundary. On instances using internal Task Runners (default runner mode), this could result in full compromise of the n8n host. On instances using external Task Runners, the attacker might gain access to or impact other task executed on the Task Runner. Task Runners must be enabled using `N8N_RUNNERS_ENABLED=true`. The issue has been fixed in n8n versions 2.10.1, 2.9.3, and 1.123.22. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations. Limit workflow creation and editing permissions to fully trusted users only, and/or use external runner mode (`N8N_RUNNERS_MODE=external`) to limit the blast radius. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
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 2.10.1之前版本、2.9.3之前版本和1.123.22之前版本存在代码注入漏洞,该漏洞源于JavaScript Task Runner沙箱存在缺陷,可能导致具有工作流创建或修改权限的经过身份验证的用户在沙箱边界外执行任意代码。
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

VendorProductAffected VersionsCPESubscribe
n8n-ion8n < 1.123.22 -

II. Public POCs for CVE-2026-27495

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III. Intelligence Information for CVE-2026-27495

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Same Patch Batch · n8n-io · 2026-02-25 · 7 CVEs total

CVE-2026-27493n8n has Unauthenticated Expression Evaluation via Form Node
CVE-2026-27494n8n has Arbitrary File Read via Python Code Node Sandbox Escape
CVE-2026-27497n8n has Potential Remote Code Execution via Merge Node
CVE-2026-27577n8n: Expression Sandbox Escape Leads to RCE
CVE-2026-27578n8n Vulnerable to Stored XSS via Various Nodes
CVE-2026-27498n8n has Arbitrary Command Execution via File Write and Git Operations

IV. Related Vulnerabilities

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