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CVE-2026-56778— n8n - Authorization Bypass in Public API Execution Retry Endpoint

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 2.25.7之前版本和2.26.2之前版本存在授权问题漏洞，该漏洞源于Public API execution retry端点存在授权绕过问题，该端点使用workflow:read作用域替代workflow:execute作用域进行访问授权，可能导致已通过身份验证的用户绕过读取和执行访问之间的预期权限边界。

CVSS 6.4 · Medium EPSS 0.29% · P20

Affected Version Matrix 4

VendorProduct Version RangeStatus
n8n n8n < 2.26.2 affected
2.26.2 unaffected
< 2.25.7 affected
2.25.7 unaffected
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I. Basic Information for CVE-2026-56778

Vulnerability Information
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Vulnerability Title
n8n - Authorization Bypass in Public API Execution Retry Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
n8n before 2.25.7 and 2.26.x before 2.26.2 contains an authorization bypass in the Public API execution retry endpoint, which authorizes access using the workflow:read scope instead of workflow:execute. An authenticated user with read-only access to a shared workflow can use the Public API to retry executions of that workflow, bypassing the intended permission boundary between read and execute access. This affects instances where workflows are shared with other users or across projects.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
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 2.25.7之前版本和2.26.2之前版本存在授权问题漏洞，该漏洞源于Public API execution retry端点存在授权绕过问题，该端点使用workflow:read作用域替代workflow:execute作用域进行访问授权，可能导致已通过身份验证的用户绕过读取和执行访问之间的预期权限边界。
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 ~ 2.26.2 -
n8n n8n 0 ~ 2.25.7 -

II. Public POCs for CVE-2026-56778

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III. Intelligence Information for CVE-2026-56778

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Vendor Advisories for CVE-2026-56778 (2)

Same Patch Batch · n8n · 2026-07-08 · 7 CVEs total

CVE-2026-56776 7.4 HIGH n8n - Incorrect OAuth Scope Validation in Workflow Test Run Endpoint
CVE-2026-56359 5.4 MEDIUM n8n - Cross-Site Scripting in Credential Management OAuth2 Authorization URL
CVE-2026-56775 5.4 MEDIUM n8n - Incorrect OAuth Scope Validation in Evaluation Test Runs Endpoints
CVE-2026-56360 4.0 MEDIUM n8n - Webhook Forgery via Unsigned POST Requests in ZendeskTrigger
CVE-2026-59253 n8n - Improper Authorization in Workflow Assignment to Folders
CVE-2026-59257 n8n - SQL Injection in MySQL v1 executeQuery Operation via Expression Interpolation

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n
Same weakness: CWE-863

V. Comments for CVE-2026-56778

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