CVE-2026-45666

Published: May 15, 2026Modified: Jun 17, 2026

6.5

Vector

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

Exploitability: 2.8 / Impact: 3.6

Source: security-advisories@github.com (Secondary)

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 (1)

Products: Openwebui: Open Webui

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Openwebui Open Webui	Before 0.8.11

Related CWEs

Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

References (2)

https://github.com/open-webui/open-webui/security/advisories/GHSA-x3qm-p8hr-3c3h

Source: security-advisories@github.com

ExploitPatchVendor Advisory

https://github.com/open-webui/open-webui/security/advisories/GHSA-x3qm-p8hr-3c3h

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitPatchVendor Advisory

Timeline

No history available yet.