{"id":"GHSA-mwq7-vcmc-cm4q","title":"Duplicate Advisory: SSO Instance-Role Provisioning Allows Privilege Escalation to Instance Owner","summary":"Duplicate Advisory: SSO Instance-Role Provisioning Allows Privilege Escalation to Instance Owner","severity":"high","cwe":["CWE-639"],"vendor":"n8n","product":"n8n","ecosystem":"npm","affected":["n8n < 1.123.64"],"published":"2026-07-22","updated":"2026-07-22","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-mwq7-vcmc-cm4q","references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-35q8-9mj6-wjmf"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65016"},{"url":"https://www.vulncheck.com/advisories/n8n-before-privilege-escalation-via-sso-instance-role"},{"url":"https://github.com/advisories/GHSA-mwq7-vcmc-cm4q"}],"tags":["ghsa","npm"],"ingestedAt":"2026-07-22T22:06:58.137Z","slug":"GHSA-mwq7-vcmc-cm4q","body":"## Overview\n\n## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-35q8-9mj6-wjmf. This link is maintained to preserve external references.\n\n## Original Description\nn8n 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.\n\n## Affected packages\n\n- `n8n < 1.123.64`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}