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CVE-2026-56775— n8n - Incorrect OAuth Scope Validation in Evaluation Test Runs Endpoints

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 1.123.55之前版本、2.25.7之前版本和2.26.2之前版本存在授权问题漏洞，该漏洞源于在三个改变状态的评估测试运行端点中，使用workflow:read范围而非workflow:execute范围进行授权，导致具有项目查看者角色的用户能够对仅具有读取权限的工作流启动新的评估测试运行、取消正在进行的运行以及删除运行记录。

CVSS 5.4 · Medium EPSS 0.30% · P21

Affected Version Matrix 6

VendorProduct Version RangeStatus
n8n n8n < 1.123.55 affected
1.123.55 unaffected
< 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-2026-56775

Vulnerability Information
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Vulnerability Title
n8n - Incorrect OAuth Scope Validation in Evaluation Test Runs Endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
n8n before 1.123.55, 2.25.7, and 2.26.2 contains an authorization vulnerability in three mutating evaluation test-run endpoints that authorize state-changing actions using the workflow:read scope instead of the action-appropriate workflow:execute scope. On instances using Advanced Permissions (Enterprise/Cloud) with projects and viewer roles, an authenticated user with the project:viewer role can start new evaluation test runs, cancel in-flight runs, and delete run records for workflows they only have read access to.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
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 1.123.55之前版本、2.25.7之前版本和2.26.2之前版本存在授权问题漏洞，该漏洞源于在三个改变状态的评估测试运行端点中，使用workflow:read范围而非workflow:execute范围进行授权，导致具有项目查看者角色的用户能够对仅具有读取权限的工作流启动新的评估测试运行、取消正在进行的运行以及删除运行记录。
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 ~ 1.123.55 -
n8n n8n 0 ~ 2.26.2 -
n8n n8n 0 ~ 2.25.7 -

II. Public POCs for CVE-2026-56775

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III. Intelligence Information for CVE-2026-56775

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Vendor Advisories for CVE-2026-56775 (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-2026-56778 6.4 MEDIUM n8n - Authorization Bypass in Public API Execution Retry Endpoint
CVE-2026-56359 5.4 MEDIUM n8n - Cross-Site Scripting in Credential Management OAuth2 Authorization URL
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-2026-56775

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