CVE-2026-33663— n8n Vulnerable to Credential Theft via Name-Based Resolution and Permission Checker Bypass in Community Edition
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 2.14.1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，该漏洞源于授权链缺陷和凭据权限检查器绕过，可能导致明文凭据泄露。
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I. Basic Information for CVE-2026-33663
Vulnerability Information
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Vulnerability Title
n8n Vulnerable to Credential Theft via Name-Based Resolution and Permission Checker Bypass in Community Edition
Source: CVE Program / CVE List V5
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 the `global:member` role could exploit chained authorization flaws in n8n's credential pipeline to steal plaintext secrets from generic HTTP credentials (`httpBasicAuth`, `httpHeaderAuth`, `httpQueryAuth`) belonging to other users on the same instance. The attack abuses a name-based credential resolution path that does not enforce ownership or project scope, combined with a bypass in the credentials permission checker that causes generic HTTP credential types to be skipped during pre-execution validation. Together, these flaws allow a member-role user to resolve another user's credential ID and execute a workflow that decrypts and uses that credential without authorization. Native integration credential types (e.g. `slackApi`, `openAiApi`, `postgres`) are not affected by this issue. This vulnerability affects Community Edition only. Enterprise Edition has additional permission gates on workflow creation and execution that independently block this attack chain. The issue has been fixed in n8n versions 1.123.27, 2.13.3, and 2.14.1. 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: Restrict instance access to fully trusted users only, and/or audit credentials stored on the instance and rotate any generic HTTP credentials (`httpBasicAuth`, `httpHeaderAuth`, `httpQueryAuth`) that may have been exposed. 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:N/VA:N/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
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，该漏洞源于授权链缺陷和凭据权限检查器绕过，可能导致明文凭据泄露。
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-2026-33663
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Vendor Advisories for CVE-2026-33663 (1)
Same Patch Batch · n8n-io · 2026-03-25 · 11 CVEs total
| CVE-2026-27496 | n8n has In-Process Memory Disclosure in its Task Runner | |
| CVE-2026-33660 | n8n Has Multiple Remote Code Execution Vulnerabilities in Merge Node AlaSQL SQL Mode | |
| CVE-2026-33665 | n8n: LDAP Email-Based Account Linking Allows Privilege Escalation and Account Takeover | |
| CVE-2026-33696 | n8n Vulnerable to Prototype Pollution in XML & GSuiteAdmin node parameters lead to RCE | |
| CVE-2026-33713 | n8n Vulnerable to SQL Injection in Data Table Node via orderByColumn Expression | |
| CVE-2026-33722 | n8n Has External Secrets Authorization Bypass in Credential Saving | |
| CVE-2026-33720 | n8n Has Authorization Bypass in OAuth Callback via N8N_SKIP_AUTH_ON_OAUTH_CALLBACK | |
| CVE-2026-33724 | n8n's Source Control SSH Configuration Uses StrictHostKeyChecking=no | |
| CVE-2026-33749 | n8n Vulnerable to XSS via Binary Data Inline HTML Rendering | |
| CVE-2026-33751 | n8n Vulnerable to LDAP Filter Injection in LDAP Node |
IV. Related Vulnerabilities
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CVE-2026-110853
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CVE-2026-110852
n8n before 1.123.83, 2.41.4, and 2.42.1 Unauthenticated Work -
CVE-2026-110851
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CVE-2026-110850
n8n before 2.41.4 and 2.42.1 Credential Check Bypass via Age -
CVE-2026-110849
n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Binar
Same vendor: n8n-io
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CVE-2026-110853
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CVE-2026-110852
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CVE-2026-110851
n8n before 2.41.4 and 2.42.1 Cross-Project Agent Ownership T -
CVE-2026-110850
n8n before 2.41.4 and 2.42.1 Credential Check Bypass via Age -
CVE-2026-110849
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Same weakness: CWE-639
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