Flowise: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit den Rechten des Dienstes
WID-SEC-2026-4270 · first 02.11.2026 · updated 02.11.2026 · CVSS 9,9
What it is about
Flowise ist eine Benutzeroberfläche zur Erstellung von LLMs (Large Language Model). Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Flowise ausnutzen, um Sicherheitsvorkehrungen zu umgehen und beliebigen Programmcode mit den Rechten des Dienstes 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
- Sicherheitsvorkehrungen zu umgehen
- beliebigen Programmcode mit den Rechten des Dienstes auszuführen
Am I affected?
Affected according to the BSI:
- Open Source Flowise <=3.1.4
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
According to the BSI there is no update yet. The vendor notices below name interim protective measures, if any.
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
CVE: CVE-2026-119978
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.