n8n: SSO Instance-Role Provisioning Allows Privilege Escalation to Instance Owner
- Product
- n8n
- CVE
- CVE-2026-65016
- Affected
- n8n < 1.123.64, 2.0.0-rc.0 to 2.29.8, 2.30.0 to 2.30.1
- Fixed in
- 1.123.64, 2.29.8, and 2.30.1
Last verified against sources: October 26, 2026
Am I affected?
n8n: affected n8n < 1.123.64, 2.0.0-rc.0 to 2.29.8, 2.30.0 to 2.30.1. Fixed in 1.123.64, 2.29.8, and 2.30.1.
- Check your version: run
npm ls n8n. Versions < 1.123.64 of n8n are affected. [1]
What to do now
- Upgrade to the fixed version: run
npm install n8n@1.123.64(first patched version 1.123.64). [1] - Upgrade to n8n 1.123.64, 2.29.8, or 2.30.1 or later. [1]
- Disable instance-role provisioning by unsetting or setting
N8N_SSO_SCOPES_PROVISION_INSTANCE_ROLE=false. [1] - Audit IdP claim mappings to ensure no user-controllable attribute can supply the instance-role claim value. [1]
- Restrict SSO access to fully trusted users only. [1]
General practice, not from the source: if the affected software could read tokens or credentials, rotate them after upgrading; pin versions and review changes before updating tools your agents run.
What happened
- n8n's Enterprise SSO instance-role provisioning maps a role claim asserted by the configured Identity Provider (IdP) to an n8n global role and applies it during authentication. [1]
- The provisioning path did not prevent assignment of the
global:ownerrole, unlike the token-exchange identity path, which explicitly rejects it. [1] - An SSO-authenticated user whose instance-role claim resolves to
global:owneris provisioned as an instance owner. [1]
Impact
- The user obtains full administrative control over all workflows, credentials, users, and instance configuration. [1]
- This is a privilege-escalation issue that is exploitable only under specific conditions. [1]
- It affects instances where Enterprise SSO is configured and instance-role provisioning is enabled via the
N8N_SSO_SCOPES_PROVISION_INSTANCE_ROLEflag, which is disabled by default. [1] - Exploitation additionally requires the attacker to control the value of the instance-role claim issued by the IdP. [1]
What was done
Sources
- GHSA-35q8-9mj6-wjmf — GitHub Advisory Database
Every statement above was checked against these sources before publishing. Spotted an error? Tell us and we will correct it with a dated note.
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[CVE-2026-65016] n8n: SSO Instance-Role Provisioning Allows Privilege Escalation to Instance Owner
Product: n8n | Affected: n8n < 1.123.64, 2.0.0-rc.0 to 2.29.8, 2.30.0 to 2.30.1 | Fixed in: 1.123.64, 2.29.8, and 2.30.1
Summary: n8n's Enterprise SSO instance-role provisioning maps a role claim asserted by the configured Identity Provider (IdP) to an n8n global role and applies it during authentication.
Source & remediation on AgentArmorHQ: https://agentarmorhq.com/incidents/2026/07/cve-2026-65016-n8nCorrections
Report an error or request a correction. We review requests within 5 business days and add a dated correction note.
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