Arbitrary file upload in Langflow-ai Langflow
CVE-2026-6596
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 i…
EPSS: 0.001 (17.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Langflow-ai Langflow — versions 1.0, 1.1.0
Weakness classification (CWE)
References
- VDB-358231 | langflow-ai langflow API Endpoint endpoints.py create_upload_file unrestricted upload (technical-description, vdb-entry)
- VDB-358231 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, permissions-required)
- Submit #791919 | Langflow <= 1.1.0 Unrestricted Upload of File with Dangerous Type (third-party-advisory)
- cna@vuldb.com (exploit)
Frequently asked questions
- What is CVE-2026-6596?
- CVE-2026-6596 is a high-severity vulnerability in Langflow-ai Langflow, classified under Improper Access Control. CVSS score: 7.3/10. Published 2026-04-20.
- How severe is CVE-2026-6596?
- High severity. CVSS v3 base score is 7.3 out of 10.