{"id":"GHSA-mwq7-vcmc-cm4q","summary":"Duplicate Advisory: SSO Instance-Role Provisioning Allows Privilege Escalation to Instance Owner","details":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-35q8-9mj6-wjmf.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claim value issued by the IdP.","modified":"2026-07-22T22:16:06.835618239Z","published":"2026-07-22T12:32:17Z","withdrawn":"2026-07-22T22:02:51Z","database_specific":{"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-07-22T22:02:51Z","nvd_published_at":"2026-07-22T12:18:18Z","cwe_ids":["CWE-639"]},"references":[{"type":"WEB","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-35q8-9mj6-wjmf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65016"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/n8n-before-privilege-escalation-via-sso-instance-role"}],"affected":[{"package":{"name":"n8n","ecosystem":"npm","purl":"pkg:npm/n8n"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"database_specific":{"last_known_affected_version_range":"\u003c 1.123.64","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-mwq7-vcmc-cm4q/GHSA-mwq7-vcmc-cm4q.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}