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.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.123.64CPE matchmatch criteria | cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:* | ||
< 1.123.64CPE matchmatch criteria | cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:* | ||
>= 2.0.0, < 2.29.8CPE matchmatch criteria | cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:* | ||
>= 2.0.0, < 2.29.8CPE matchmatch criteria | cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:* | ||
2.30.0CPE matchmatch criteria | cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:community:node.js:*:* |
CVSS version used by this source: 4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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