CVE-2026-6596
HIGHlangflow-ai langflow API Endpoint endpoints.py create_upload_file unrestricted upload
Title source: cnaDescription
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.
References (4)
Core 4
Core References
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-358231 | langflow-ai langflow API Endpoint endpoints.py create_upload_file unrestricted upload
https://vuldb.com/vuln/358231
Signature, Permissions Required signature
permissions-required
VDB-358231 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/358231/cti
Third Party Advisory third-party-advisory
Submit #791919 | Langflow <= 1.1.0 Unrestricted Upload of File with Dangerous Type
https://vuldb.com/submit/791919
Scores
CVSS v3
7.3
EPSS
0.0028
EPSS Percentile
19.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-284
CWE-434
Status
published
Products (3)
langflow-ai/langflow
1.0
langflow-ai/langflow
1.1.0
pypi/langflow-base
0 - 1.9.1PyPI
Published
Apr 20, 2026
Tracked Since
Apr 20, 2026