CVE-2026-65016
CVE-2026-65016 · n8n before 1.123.64, 2.29.8, and 2.30.1 Privilege Escalation via SSO Instance-Role
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 7.7 · High · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
n8n
- Versions
- ≥ 0, < 1.123.64: Affected (semver)
- 1.123.64: Not affected (semver)
Update to 1.123.64
n8n
- Versions
- ≥ 0, < 2.30.1: Affected (semver)
- 2.30.1: Not affected (semver)
Update to 2.30.1
n8n
- Versions
- ≥ 0, < 2.29.8: Affected (semver)
- 2.29.8: Not affected (semver)
Update to 2.29.8
n8n npm
- Affected ranges
- SEMVER: < 1.123.64
Update to 1.123.64
n8n npm
- Affected ranges
- SEMVER: ≥ 2.30.0, < 2.30.1
Update to 2.30.1
n8n npm
- Affected ranges
- SEMVER: ≥ 2.0.0-rc.0, < 2.29.8
Update to 2.29.8