| Component | n8n |
| Severity | high (CVSS 8.8) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Published (NVD) | 2026-07-22 |
| Last modified | 2026-07-27 |
| Affected versions | n8n < 1.123.64 n8n < 1.123.64 n8n >= 2.0.0, < 2.29.8 n8n >= 2.0.0, < 2.29.8 n8n = 2.30.0 n8n = 2.30.0 |
| Fixed in | 1.123.64, 2.29.8 |
| Weakness | CWE-639 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade n8n to
1.123.64or later (or the patched release of your branch: 2.29.8). - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-65016
- https://github.com/n8n-io/n8n/security/advisories/GHSA-35q8-9mj6-wjmf
- https://www.vulncheck.com/advisories/n8n-before-privilege-escalation-via-sso-instance-role
Read more
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