CVE-2026-6596: Langflow-Ai Langflow

High severity, CVSS 7.3. EPSS: 0.5% chance of exploitation in the next 30 days.

A security flaw has been discovered in langflow-ai langflow up to 1.1.0. This issue affects the function create_upload_file of the file src/backend/base/Langflow/api/v1/endpoints.py of the component API Endpoint. The manipulation results in unrestricted upload. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Langflow-Ai Langflow: version 1.0 only; version 1.1.0 only

Published 2026-04-20. Last modified 2026-06-17.