Langflow: Mehrere Schwachstellen
WID-SEC-2026-3728 · first 05.10.2026 · updated 07.10.2026 · CVSS 9,8
What it is about
Langflow bietet eine visuelle Schnittstelle zum Erstellen von LLM-basierten Anwendungen. Ein Angreifer kann mehrere Schwachstellen in Langflow ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen und um Dateien zu manipulieren.
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
- einen Denial of Service Angriff durchzuführen
- Informationen offenzulegen
- Dateien zu manipulieren
Am I affected?
Affected according to the BSI:
- Open Source Langflow <1.12.3
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source Langflow 1.12.3
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-2026-101329, CVE-2026-101331, CVE-2026-103360, CVE-2026-104334, CVE-2026-104335, CVE-2026-88962, CVE-2026-93443, CVE-2026-93445, CVE-2026-93447, CVE-2026-93448, CVE-2026-93449, CVE-2026-93674, CVE-2026-93675, CVE-2026-93677, CVE-2026-93678, CVE-2026-93679, CVE-2026-97655, CVE-2026-97671, CVE-2026-97673, CVE-2026-97674 …
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.