CVE-2026-45301 HIGH

CVE-2026-45301: Open WebUI: Missing permission check in files API allows authenticated users to list, access and delete every uploaded file

Vendor Open-Webui
Product open-webui
Weakness CWE-284
Published May 15, 2026
Last update May 19, 2026
View on NVD All CVEs

CVSS base score

8.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

What the vulnerability does

01Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.3.16, a missing permission check in all files related API endpoints allows any authenticated user to list, access and delete every file uploaded by every user to the platform. This vulnerability is fixed in 0.3.16.

Key dates

02Disclosure timeline

May 15, 2026 CVE published
May 19, 2026 Record updated