CVE-2026-44566 HIGH

CVE-2026-44566: Open WebUI: Arbitrary File Upload and Path Traversal

Vendor Open-Webui
Product open-webui
Weakness CWE-22 · Path traversal
Published May 15, 2026
Last update May 19, 2026

CVSS base score

7.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, when attaching files to a promp, the name of the file is derived from the original HTTP upload request and is not validated or sanitized. This allows for users to upload files with names containing dot-segments in the file path and traverse out of the intended uploads directory. Effectively, users can upload files anywhere on the filesystem the user running the web server has permission. This vulnerability is fixed in 0.1.124.

Key dates

02Disclosure timeline

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