n8n: Mehrere Schwachstellen
WID-SEC-2026-3393 · first 16.09.2026 · updated 02.10.2026 · CVSS 9,0
What it is about
n8n ist ein Workflow-Automatisierungstool, mit dem verschiedene Anwendungen und Dienste miteinander verbunden werden können, um Aufgaben zu automatisieren. Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in n8n ausnutzen, um Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren oder Code auszuführen.
Under what conditions?
Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.
What can happen in the worst case
An attacker could use the vulnerability to
- Sicherheitsmaßnahmen zu umgehen
- Daten offenzulegen oder zu manipulieren oder Code auszuführen
Am I affected?
Affected according to the BSI:
- n8n n8n <2.39.6
- n8n n8n <2.40.1
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- n8n n8n 2.39.6
- n8n n8n 2.40.1
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)
- GitHub Security Advisory GHSA-342v-gmh6-738j vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-4wf3-rgqr-xcp3 vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-597w-c3jh-g8fg vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-5pg9-2vqx-r6jm vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-7gjv-rcf8-x5qc vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-7gvh-q9w3-wqqx vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-89p4-6h98-c7xm vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-9rhv-fhr8-7q5r vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-c2wp-6fgc-xjq4 vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-fmmv-p585-7c8x vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-gx6g-2hm7-c4xf vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-hwv9-jhc7-f7c4 vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-rqch-9jrh-cr8w vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-rx55-8qhx-4hwx vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-w24g-6454-7w7f vom 2026-09-15 github.com
- GitHub Security Advisory GHSA-xrqg-3xcp-h45x vom 2026-09-15 github.com
CVE: CVE-2026-103245, CVE-2026-103246, CVE-2026-103247, CVE-2026-103248, CVE-2026-103249, CVE-2026-103250, CVE-2026-103251, CVE-2026-103252, CVE-2026-103253, CVE-2026-103254, CVE-2026-103255, CVE-2026-103256, CVE-2026-103257, CVE-2026-103258, CVE-2026-103259, CVE-2026-103260
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.