n8n: Mehrere Schwachstellen
WID-SEC-2026-3672 · first 30.09.2026 · updated 15.10.2026 · CVSS 9,8
What it is about
n8n ist ein Workflow-Automatisierungstool, mit dem verschiedene Anwendungen und Dienste miteinander verbunden werden können, um Aufgaben zu automatisieren. Ein Angreifer kann mehrere Schwachstellen in n8n ausnutzen, um beliebigen Programmcode auszuführen, um Sicherheitsmechanismen zu umgehen, um Informationen offenzulegen oder zu manipulieren, sowie um einen Denial of Service herbeizuführen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- beliebigen Programmcode auszuführen
- Sicherheitsmechanismen zu umgehen
- Informationen offenzulegen oder zu manipulieren
- sowie um einen Denial of Service herbeizuführen
Am I affected?
Affected according to the BSI:
- n8n n8n <1.123.83
- n8n n8n <2.41.4
- n8n n8n <2.42.1
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- n8n n8n 1.123.83
- n8n n8n 2.41.4
- n8n n8n 2.42.1
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- n8n Releases vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-29xw-66fq-4xc3 vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-3qcw-p65v-c7vq vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-4c7j-qff5-r9cx vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-5jr4-xmvf-frmj vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-5qpp-pqww-h7fp vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-728h-pmr2-7cgh vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-866p-xg8v-g2q7 vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-p3pg-xw4f-m72c vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-r6g9-5cpp-ppwr vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-x25p-9mr6-cwgp vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-x5cw-hm7v-q7mj vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-x8wx-g24x-3549 vom 2026-09-29 github.com
- GitHub Security Advisory GHSA-2r5r-xgvc-rj4p vom 2026-09-29 github.com
CVE: CVE-2026-110840, CVE-2026-110841, CVE-2026-110842, CVE-2026-110843, CVE-2026-110844, CVE-2026-110845, CVE-2026-110846, CVE-2026-110847, CVE-2026-110849, CVE-2026-110850, CVE-2026-110851, CVE-2026-110852, CVE-2026-110853
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.