CVE-2026-45666

MEDIUM EPSS 19.5%
Published May 15, 20261mo ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Medium
Find Similar
Published May 15, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
19.5% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-639

Affected Products 1

VendorProductVersionRange
openwebuiopen_webui* <0.8.11

References 1

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

Remediation

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