MEDIUM SeverityCVSS 3.16.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVE-2026-45666

Last updated May 15, 2026 · Published May 15, 2026

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.11, the API /api/v1/notes/{note_id} endpoint lacks proper authorization checks, allowing authenticated users to retrieve notes belonging to other users by guessing or enumerating UUIDs. This results in unauthorized disclosure of potentially sensitive or private user data. This vulnerability is fixed in 0.8.11.

Affected products

1 listed

open-webui:open-webui

Mappings

CWE

CWE-639

CAPEC

None listed.

Research

Insecure direct object references (IDOR): detection and preventionInsecure direct object references let users access other users' data by changing an ID. Enforce object-level…

Training

Authorisation and Access ControlRBAC, ABAC, and privilege escalation patterns in real applications.

CVE-2026-45666

Description

Affected products

Mappings

Related