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CVE-2026-42226— n8n: Credential Authorization Bypass in dynamic-node-parameters Allows Foreign API Key Replay

EPSS 0.06% · P17
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I. Basic Information for CVE-2026-42226

Vulnerability Information
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Vulnerability Title
n8n: Credential Authorization Bypass in dynamic-node-parameters Allows Foreign API Key Replay
Source: NVD (National Vulnerability Database)
Vulnerability Description
n8n is an open source workflow automation platform. Prior to versions 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An authenticated user with access to a shared workflow could supply a foreign credential ID in the request body, causing the backend to decrypt and use that credential in a helper execution path where the caller also controls the destination URL. This allowed the caller to force the backend to authenticate against attacker-controlled infrastructure using a credential belonging to another user, effectively exfiltrating a reusable API key. The issue is not limited to any single node type; any node that resolves credentials dynamically through these endpoints may be affected. This issue has been patched in versions 1.123.33, 2.17.5, and 2.18.0.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
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 1.123.33之前版本、2.17.5之前版本和2.18.0之前版本存在安全漏洞，该漏洞源于动态节点参数端点未验证认证调用者是否有权使用提供的凭据引用，可能导致认证用户强制后端使用其他用户的凭据向攻击者控制的基础设施进行身份验证。
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 < 1.123.33 -

II. Public POCs for CVE-2026-42226

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III. Intelligence Information for CVE-2026-42226

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Same Patch Batch · n8n-io · 2026-05-04 · 12 CVEs total

CVE-2026-42232n8n: XML Node Prototype Pollution to RCE
CVE-2026-42233n8n: SQL Injection in Oracle Database Node via Limit Field
CVE-2026-42229n8n: SQL Injection in SeaTable Node
CVE-2026-42228n8n: Hijacking of Unauthenticated Chat Execution
CVE-2026-42235n8n: XSS via MCP OAuth client
CVE-2026-42236n8n: Unauthenticated Denial of Service via MCP Client Registration
CVE-2026-42237n8n: SQL Injection in Snowflake and MySQL Nodes
CVE-2026-42230n8n: Open Redirect in MCP OAuth Consent Flow
CVE-2026-42234n8n: Python Task Runner Sandbox Escape
CVE-2026-42227n8n: Public API Variables IDOR Allows Cross-Project Secret Disclosure
CVE-2026-42231n8n: Prototype Pollution in XML Webhook Body Parser Leads to RCE

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-862

V. Comments for CVE-2026-42226

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