CVE-2026-45345 MEDIUM

CVE-2026-45345: Open WebUI: Missing authorization check at the model update function - models from other users can be updated

Vendor Open-Webui
Product open-webui
Weakness CWE-285
Published May 15, 2026
Last update May 18, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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 0.5.7, a user can modify another user's model even if its visibility is set to Private. By changing the access permissions during editing, unauthorized access can be gained. This vulnerability is fixed in 0.5.7.

Key dates

02Disclosure timeline

May 15, 2026 CVE published
May 18, 2026 Record updated