CVE-2026-45666

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/open-webui/open-webui/security/advisories/GHSA-x3qm-p8hr-3c3h	Exploit Patch Vendor Advisory
https://github.com/open-webui/open-webui/security/advisories/GHSA-x3qm-p8hr-3c3h	Exploit Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-15 22:16

Updated : 2026-06-17 10:52

NVD link : CVE-2026-45666

Mitre link : CVE-2026-45666

CVE.ORG link : CVE-2026-45666

JSON object : View

Products Affected

openwebui

open_webui

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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