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CVE-2026-54305— n8n: Cross-Tenant Credential Takeover via Dynamic Credentials EE Endpoints

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公司开源的一个可扩展的工作流自动化工具。 n8n 1.123.55之前版本、2.25.7之前版本和2.26.2之前版本存在安全漏洞，该漏洞源于Dynamic Credentials功能使用的三个EE端点未对目标工作流或凭证进行逐资源所有权或范围检查，可能导致已认证用户枚举私有工作流引用的凭证标识符、名称和类型，发起OAuth授权流程覆盖其他用户的凭证令牌，或撤销其他用户的凭证令牌。

AI Predicted 9.1 Difficulty: Moderate EPSS 0.37% · P30

Affected Version Matrix 3

VendorProduct Version RangeStatus
n8n-io n8n < 1.123.55 affected
>= 2.0.0-rc.0, < 2.25.7 affected
>= 2.26.0, < 2.26.2 affected
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I. Basic Information for CVE-2026-54305

Vulnerability Information
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Vulnerability Title
n8n: Cross-Tenant Credential Takeover via Dynamic Credentials EE Endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, three EE endpoints used by the Dynamic Credentials feature accepted any authenticated n8n session without performing per-resource ownership or scope checks on the target workflow or credential. An authenticated user with no project membership or credential sharing relationship could enumerate credential identifiers, names, and types referenced by any private workflow in the instance, initiate an OAuth authorization flow against another user's credential to overwrite its stored tokens with tokens bound to an account they control, or revoke another user's stored credential tokens entirely. Workflows relying on a hijacked credential would subsequently execute under the attacker's OAuth identity, enabling data exfiltration to attacker-controlled external services and persistent takeover of integrations. Token revocation would break affected workflows. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
n8n 信息泄露漏洞
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 1.123.55之前版本、2.25.7之前版本和2.26.2之前版本存在安全漏洞，该漏洞源于Dynamic Credentials功能使用的三个EE端点未对目标工作流或凭证进行逐资源所有权或范围检查，可能导致已认证用户枚举私有工作流引用的凭证标识符、名称和类型，发起OAuth授权流程覆盖其他用户的凭证令牌，或撤销其他用户的凭证令牌。
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 < 1.123.55 -

II. Public POCs for CVE-2026-54305

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III. Intelligence Information for CVE-2026-54305

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Vendor Advisories for CVE-2026-54305 (1)

Same Patch Batch · n8n-io · 2026-06-23 · 21 CVEs total

CVE-2026-54314 n8n: Denial of Service via ZIP decompression in webhook workflow
CVE-2026-44791 n8n: XML Node Prototype Pollution Patch Bypass
CVE-2026-44789 n8n: HTTP Request Node Pagination Prototype Pollution to RCE
CVE-2026-44792 n8n: Source Control Pull SQL Injection
CVE-2026-44790 n8n: Arbitrary File Read via Git Node
CVE-2026-49444 n8n: Python sandbox escape
CVE-2026-49465 n8n: Git Node Clone and Push Operations Bypass File Sandbox
CVE-2026-54304 n8n: SecurityScorecard Node Leaks API Token to User-Controlled Host
CVE-2026-54301 n8n: Same-Origin XSS in Respond to Webhook Node
CVE-2026-54310 n8n: SQL Injection in Postgres v1/TimesclaeDB Nodes
CVE-2026-45732 n8n: Cross-user Authorization Bypass in Dynamic Credential OAuth Endpoints
CVE-2026-54302 n8n: Stored XSS in Chat Trigger Node
CVE-2026-54306 n8n: Prototype Pollution enables confused-deputy execution via public webhooks
CVE-2026-54313 n8n: NoSQL Injection in MongoDB Node Find And Replace Operation
CVE-2026-54303 n8n: Reflected XSS via Facebook, WhatsApp, and Microsoft Teams Trigger Webhook Verificatio
CVE-2026-54307 n8n: Credential Exfiltration via Permission Bypass
CVE-2026-54308 n8n: Missing Token Validation on Microsoft Agent 365 Trigger Node
CVE-2026-54312 n8n: Microsoft SQL Node Prototype Pollution
CVE-2026-54309 n8n: n8n MCP Browser HTTP Transport Exposes Unauthenticated Browser-Control Sessions
CVE-2026-54311 n8n: Merge Node SQL Mode Prototype Pollution

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-200

V. Comments for CVE-2026-54305

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