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OpenAdvisories
Medium · 6.5 CVE-2026-45666 EUVD-2026-30647GHSA-x3qm-p8hr-3c3hPYSEC-2026-2768

Open WebUI: Indirect Object Reference (IDOR) in user notes

Published May 15, 2026 · Updated May 18, 2026 · Assigned by GitHub_M

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

VendorProductAffectedFixed
open-webui open-webui < 0.8.11 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI open-webui < 0.8.11 0.8.11 GHSA-x3qm-p8hr-3c3h

References