CVE-2026-45666

6.5 MEDIUM
Published: May 15, 2026 Modified: May 19, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/open-webui/open-webui/security/advisories/GHSA-x3qm-p8hr-3c3h
Source: security-advisories@github.com
Exploit Patch Vendor Advisory
https://github.com/open-webui/open-webui/security/advisories/GHSA-x3qm-p8hr-3c3h
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Patch Vendor Advisory

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.5 / 10.0
EPSS (Exploit Probability)
0.3%
19th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

openwebui