{"id":"CVE-2026-65016","sourceIdentifier":"disclosure@vulncheck.com","published":"2026-07-22T12:18:18.733","lastModified":"2026-10-24T17:10:00.220","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"Las versiones de n8n anteriores a la 1.123.64, 2.29.8 y 2.30.1 contienen una vulnerabilidad de escalada de privilegios en el aprovisionamiento de roles de instancia de SSO Empresarial. La ruta de aprovisionamiento mapea una declaración de rol afirmada por el IdP a un rol global de n8n, pero no impide la asignación del rol global:owner (a diferencia de la ruta de identidad de intercambio de tokens, que lo rechaza). Un usuario autenticado por SSO cuya declaración de rol de instancia se resuelve como global:owner es aprovisionado como propietario de la instancia, obteniendo control administrativo total sobre flujos de trabajo, credenciales, usuarios y configuración de la instancia. La explotación requiere que el SSO Empresarial esté configurado, que el aprovisionamiento de roles de instancia esté habilitado a través de N8N_SSO_SCOPES_PROVISION_INSTANCE_ROLE (deshabilitado por defecto), y que el atacante controle el valor de la declaración de rol de instancia emitido por el IdP."}],"affected":[{"source":"disclosure@vulncheck.com","affectedData":[{"vendor":"n8n-io","product":"n8n","defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","versions":[{"version":"0","lessThan":"1.123.64","versionType":"semver","status":"affected"},{"version":"1.123.64","versionType":"semver","status":"unaffected"}]},{"vendor":"n8n-io","product":"n8n","defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","versions":[{"version":"0","lessThan":"2.30.1","versionType":"semver","status":"affected"},{"version":"2.30.1","versionType":"semver","status":"unaffected"}]},{"vendor":"n8n-io","product":"n8n","defaultStatus":"unaffected","packageURL":"pkg:npm/n8n","versions":[{"version":"0","lessThan":"2.29.8","versionType":"semver","status":"affected"},{"version":"2.29.8","versionType":"semver","status":"unaffected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"disclosure@vulncheck.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-23T18:16:35.338246Z","id":"CVE-2026-65016","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"disclosure@vulncheck.com","type":"Secondary","description":[{"lang":"en","value":"CWE-639"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*","versionEndExcluding":"1.123.64","matchCriteriaId":"843094AD-81C8-4961-A8A1-037468DEACA7"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*","versionEndExcluding":"1.123.64","matchCriteriaId":"E1626500-EC42-4BF5-8ECE-6E5E249D37F6"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*","versionStartIncluding":"2.0.0","versionEndExcluding":"2.29.8","matchCriteriaId":"3281592C-CB07-412C-9770-3521447ADEC1"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*","versionStartIncluding":"2.0.0","versionEndExcluding":"2.29.8","matchCriteriaId":"E4A0C557-F57B-4931-A857-ACC4639C030D"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:community:node.js:*:*","matchCriteriaId":"E125F7EF-F72F-427F-82DE-D6A505B1DF8F"},{"vulnerable":true,"criteria":"cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:enterprise:node.js:*:*","matchCriteriaId":"3C2780A0-55EC-488D-9149-EE83BA246A38"}]}]}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-35q8-9mj6-wjmf","source":"disclosure@vulncheck.com","tags":["Mitigation","Vendor Advisory"]},{"url":"https://www.vulncheck.com/advisories/n8n-before-privilege-escalation-via-sso-instance-role","source":"disclosure@vulncheck.com","tags":["Third Party Advisory"]}]}