7.3High
CVE-2026-6596langflow-ai langflow API Endpoint endpoints.py create_upload_file unrestricted upload
Description
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.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| langflow | langflow | — | |
| langflow-ai | langflow | 1.0, 1.1.0 |
References and patches
- VDB-358231 | langflow-ai langflow API Endpoint endpoints.py create_upload_file unrestricted upload vdb-entrytechnical-description
- VDB-358231 | CTI Indicators (IOB, IOC, TTP, IOA) signature
- Submit #791919 | Langflow <= 1.1.0 Unrestricted Upload of File with Dangerous Type third-party-advisory
- https://gist.github.com/chenhouser2025/c2aabfdee41009cfe45d28a9924742a0 exploit