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CVE-2026-27577— n8n: Expression Sandbox Escape Leads to RCE

Quick assessment

Affected
n8n-io n8n
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.

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，该漏洞源于具有权限的认证用户可滥用工作流参数中的特制表达式，可能导致执行系统命令。

CVSS 9.4 · Critical EPSS 1.01% · P62

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 3

VendorProduct Version RangeStatus
n8n-io n8n < 1.123.22 affected
>= 2.0.0, < 2.9.3 affected
>= 2.10.0, < 2.10.1 affected
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I. Basic Information for CVE-2026-27577

Vulnerability Information
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Vulnerability Title
n8n: Expression Sandbox Escape Leads to RCE
Source: CVE Program / CVE List V5
Vulnerability Description
n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, additional exploits in the expression evaluation of n8n have been identified and patched following CVE-2025-68613. An authenticated user with permission to create or modify workflows could abuse crafted expressions in workflow parameters to trigger unintended system command execution on the host running n8n. The issues have 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 all known vulnerabilities. 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 deploy n8n in a hardened environment with restricted operating system privileges and network access to reduce the impact of potential exploitation. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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
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，该漏洞源于具有权限的认证用户可滥用工作流参数中的特制表达式，可能导致执行系统命令。
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

Vendor Product Affected Versions CPE Subscribe
n8n-io n8n < 1.123.22 -

II. Public POCs for CVE-2026-27577

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III. Intelligence Information for CVE-2026-27577

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Patches & Fixes for CVE-2026-27577 (2)

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

CVE-2026-27495 n8n has a Sandbox Escape in its JavaScript Task Runner
CVE-2026-27493 n8n has Unauthenticated Expression Evaluation via Form Node
CVE-2026-27494 n8n has Arbitrary File Read via Python Code Node Sandbox Escape
CVE-2026-27497 n8n has Potential Remote Code Execution via Merge Node
CVE-2026-27578 n8n Vulnerable to Stored XSS via Various Nodes
CVE-2026-27498 n8n has Arbitrary Command Execution via File Write and Git Operations

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-94

V. Comments for CVE-2026-27577

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