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CVE-2026-33696— n8n Vulnerable to Prototype Pollution in XML & GSuiteAdmin node parameters lead to RCE

EPSS 0.18% · P39
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I. Basic Information for CVE-2026-33696

Vulnerability Information
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Vulnerability Title
n8n Vulnerable to Prototype Pollution in XML & GSuiteAdmin node parameters lead to RCE
Source: NVD (National Vulnerability Database)
Vulnerability Description
n8n is an open source workflow automation platform. Prior to versions 2.14.1, 2.13.3, and 1.123.27, an authenticated user with permission to create or modify workflows could exploit a prototype pollution vulnerability in the XML and the GSuiteAdmin nodes. By supplying a crafted parameters as part of node configuration, an attacker could write attacker-controlled values onto `Object.prototype`. An attacker could use this prototype pollution to achieve remote code execution on the n8n instance. The issue has been fixed in n8n versions 2.14.1, 2.13.3, and 1.123.27. 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 disable the XML node by adding `n8n-nodes-base.xml` to the `NODES_EXCLUDE` environment variable. 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
CWE-1321
Source: NVD (National Vulnerability Database)
Vulnerability Title
n8n 安全漏洞
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 2.14.1之前版本、2.13.3之前版本和1.123.27之前版本存在安全漏洞，该漏洞源于XML和GSuiteAdmin节点存在原型污染，可能导致远程代码执行。
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 < 1.123.27 -

II. Public POCs for CVE-2026-33696

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III. Intelligence Information for CVE-2026-33696

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Same Patch Batch · n8n-io · 2026-03-25 · 11 CVEs total

CVE-2026-27496n8n has In-Process Memory Disclosure in its Task Runner
CVE-2026-33660n8n Has Multiple Remote Code Execution Vulnerabilities in Merge Node AlaSQL SQL Mode
CVE-2026-33663n8n Vulnerable to Credential Theft via Name-Based Resolution and Permission Checker Bypass
CVE-2026-33665n8n: LDAP Email-Based Account Linking Allows Privilege Escalation and Account Takeover
CVE-2026-33713n8n Vulnerable to SQL Injection in Data Table Node via orderByColumn Expression
CVE-2026-33722n8n Has External Secrets Authorization Bypass in Credential Saving
CVE-2026-33720n8n Has Authorization Bypass in OAuth Callback via N8N_SKIP_AUTH_ON_OAUTH_CALLBACK
CVE-2026-33724n8n's Source Control SSH Configuration Uses StrictHostKeyChecking=no
CVE-2026-33749n8n Vulnerable to XSS via Binary Data Inline HTML Rendering
CVE-2026-33751n8n Vulnerable to LDAP Filter Injection in LDAP Node

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-1321

V. Comments for CVE-2026-33696

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