---
cve: "CVE-2026-65016"
severity: "HIGH"
cvss: 7.7
epss: "31%"
vendor: "n8n-io"
kev: false
exploited: false
published: "2026-07-22 12:18:18"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T05:10:08+02:00"
---

# CVE-2026-65016

> 7.7 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 25d74f918253845e2ad25eb824238b49d0d8a30c (Commit)
- 7786117e976664b67288f13d6cfcd1fcf1b1289b (Commit)

## Referenzen

- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-65016) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_