CVE-2026-6596 PUBLISHED

langflow-ai langflow API Endpoint endpoints.py create_upload_file unrestricted upload

Assigner: VulDB
Reserved: 19.04.2026 Published: 20.04.2026 Updated: 20.04.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CVSS Score: 6.9

Product Status

Vendor langflow-ai
Product langflow
Versions
  • Version 1.0 is affected
  • Version 1.1.0 is affected

Credits

  • Eric-d (VulDB User) reporter
  • VulDB CNA Team coordinator

References

Problem Types

  • Unrestricted Upload CWE
  • Improper Access Controls CWE