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CVE-2026-65016— n8n before 1.123.64, 2.29.8, and 2.30.1 Privilege Escalation via SSO Instance-Role

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 1.123.64之前版本、2.29.8版本之前版本和2.30.1之前版本存在授权问题漏洞，该漏洞源于Enterprise SSO实例角色配置中角色分配逻辑错误，未阻止global:owner角色的分配，可能导致经SSO身份验证的用户获得实例所有者权限，从而完全管理控制工作流、凭据、用户和实例配置。

CVSS 7.7 · High EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts

Affected Version Matrix 6

VendorProduct Version RangeStatus
n8n-io n8n < 1.123.64 affected
1.123.64 unaffected
< 2.30.1 affected
2.30.1 unaffected
< 2.29.8 affected
2.29.8 unaffected
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I. Basic Information for CVE-2026-65016

Vulnerability Information
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Vulnerability Title
n8n before 1.123.64, 2.29.8, and 2.30.1 Privilege Escalation via SSO Instance-Role
Source: CVE Program / CVE List V5
Vulnerability Description
n8n versions before 1.123.64, 2.29.8, and 2.30.1 contain a privilege escalation vulnerability in Enterprise SSO instance-role provisioning. The provisioning path maps an IdP-asserted role claim to an n8n global role but does not prevent assignment of the global:owner role (unlike the token-exchange identity path, which rejects it). An SSO-authenticated user whose instance-role claim resolves to global:owner is provisioned as instance owner, gaining full administrative control over workflows, credentials, users, and instance configuration. Exploitation requires that Enterprise SSO is configured, instance-role provisioning is enabled via N8N_SSO_SCOPES_PROVISION_INSTANCE_ROLE (disabled by default), and the attacker controls the instance-role claim value issued by the IdP.
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:H/SC:N/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 1.123.64之前版本、2.29.8版本之前版本和2.30.1之前版本存在授权问题漏洞，该漏洞源于Enterprise SSO实例角色配置中角色分配逻辑错误，未阻止global:owner角色的分配，可能导致经SSO身份验证的用户获得实例所有者权限，从而完全管理控制工作流、凭据、用户和实例配置。
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 0 ~ 1.123.64 -
n8n-io n8n 0 ~ 2.30.1 -
n8n-io n8n 0 ~ 2.29.8 -

II. Public POCs for CVE-2026-65016

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III. Intelligence Information for CVE-2026-65016

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Vendor Advisories for CVE-2026-65016 (1)

News Coverage for CVE-2026-65016 (1)

Same Patch Batch · n8n-io · 2026-07-22 · 14 CVEs total

CVE-2026-65595 8.9 HIGH n8n before 2.29.8 and 2.30.1 Privilege Escalation via Token Exchange
CVE-2026-65593 6.3 MEDIUM n8n before 1.123.64, 2.29.8, and 2.30.1 SSRF via Dynamic Node Parameters
CVE-2026-65599 5.1 MEDIUM n8n before 1.123.64, 2.29.8, and 2.30.1 Credential Exposure via JWT Header
CVE-2026-65589 5.1 MEDIUM n8n before 1.123.64 Credential Exposure via LLM Node Execution Data
CVE-2026-65594 5.1 MEDIUM n8n before 2.30.1 Missing OAuth Authorization Check
CVE-2026-65597 n8n before 1.123.64 DOM-Based XSS via Unsandboxed iframe
CVE-2026-65590 n8n before 2.30.1 Shell Sandbox Bypass on Linux Windows
CVE-2026-65591 n8n before 1.123.64 Sanitizer Bypass Remote Code Execution
CVE-2026-65592 n8n before 1.123.64 Stored DOM XSS via cachedResultUrl
CVE-2026-65015 n8n before 2.30.1 Privilege Escalation via run_node_tool
CVE-2026-65596 n8n before 1.123.64 Credential Exfiltration via GraphQL Node
CVE-2026-65014 n8n before 2.28.0 Authentication Bypass via test-webhook
CVE-2026-65598 n8n before 1.123.64 Remote Code Execution via Git Clone

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-65016

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