Langflow: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode mit Administratorrechten
WID-SEC-2026-3164 · first 03.09.2026 · updated 03.09.2026 · CVSS 9,8
What it is about
Langflow bietet eine visuelle Schnittstelle zum Erstellen von LLM-basierten Anwendungen. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Langflow ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- beliebigen Programmcode mit Administratorrechten auszuführen
Am I affected?
Affected according to the BSI:
- Open Source Langflow 1.4.2
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Install the updates provided by the vendor; details in the sources below.
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)
- Zero Day Initiative ZDI-26-034 vom 2026-09-02 www.zerodayinitiative.com
- NVD CVE-2026-0768 vom 2026-09-02 nvd.nist.gov
- GitHub PoC vom 2026-09-02 github.com
- Bleeping Computer vom 2026-09-02 www.bleepingcomputer.com
- CCB Belgium Advisory vom 2026-09-02 ccb.belgium.be
CVE: CVE-2026-0768
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.