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CVE-2026-59254— n8n - External Secrets Disclosure via Workflow Node Expressions

Quick assessment

Affected
n8n 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公司开源的一个可扩展的工作流自动化工具。 n8n 2.28.1之前版本存在授权问题漏洞，该漏洞源于在工作流节点表达式中错误解析凭据范围外的外部秘密信息，可能导致已通过身份验证的项目编辑者通过引用节点表达式中的外部秘密值读取明文秘密值，而无需显式的秘密访问权限。

AI Predicted 7.5 Difficulty: Easy EPSS 0.36% · P28

Affected Version Matrix 4

VendorProduct Version RangeStatus
n8n n8n < 2.28.1 affected
2.28.1 unaffected
< 2.27.4 affected
2.27.4 unaffected
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I. Basic Information for CVE-2026-59254

Vulnerability Information
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Vulnerability Title
n8n - External Secrets Disclosure via Workflow Node Expressions
Source: CVE Program / CVE List V5
Vulnerability Description
n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
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 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n是n8n公司开源的一个可扩展的工作流自动化工具。 n8n 2.28.1之前版本存在授权问题漏洞，该漏洞源于在工作流节点表达式中错误解析凭据范围外的外部秘密信息，可能导致已通过身份验证的项目编辑者通过引用节点表达式中的外部秘密值读取明文秘密值，而无需显式的秘密访问权限。
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 n8n 0 ~ 2.28.1 -
n8n n8n 0 ~ 2.27.4 -

II. Public POCs for CVE-2026-59254

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III. Intelligence Information for CVE-2026-59254

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Vendor Advisories for CVE-2026-59254 (2)

Same Patch Batch · n8n · 2026-07-15 · 5 CVEs total

CVE-2026-56352 6.4 MEDIUM n8n - Arbitrary File Read and Execution via ExecuteWorkflow localFile Parameter
CVE-2026-56353 4.8 MEDIUM n8n - Authentication Bypass in Chat Trigger Node
CVE-2026-59259 n8n - Permission Bypass via Expression Parser Mismatch in External Secrets
CVE-2026-56349 n8n - Guardrail Node Bypass via Crafted Input

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n
Same weakness: CWE-639

V. Comments for CVE-2026-59254

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