CVE-2026-65016

The record

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.

Affected packages

Related vulnerabilities

• CVE-2026-13319 GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.10 before… CWE-639
• CVE-2026-111767 MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and… CWE-639
• CVE-2026-105755 vLLM is an inference and serving engine for large language models. CWE-639
• CVE-2026-105754 vLLM is an inference and serving engine for large language models. CWE-639
• CVE-2026-62140 Unauthenticated Insecure Direct Object References (IDOR) in Quiz And Survey Master <=… CWE-639
• CVE-2026-62134 Contributor Insecure Direct Object References (IDOR) in Starter Templates <= 4.7.5… CWE-639
• CVE-2026-62113 Contributor Insecure Direct Object References (IDOR) in Slim SEO <= 4.10.0 versions. CWE-639
• CVE-2026-89264 MoguBlog through 6.2 fails to validate the comment author identity in the POST… CWE-639