CVE-2026-6596

HIGH 7.3

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

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-434 CWE-284
Vendor	langflow-ai
Product	langflow
Published	Apr 20, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

langflow-ai / langflow

1.0 1.1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/358231 vuldb.com: https://vuldb.com/vuln/358231/cti vuldb.com: https://vuldb.com/submit/791919 gist.github.com: https://gist.github.com/chenhouser2025/c2aabfdee41009cfe45d28a9924742a0

Credits

🔍 Eric-d (VulDB User) VulDB CNA Team