PT-2026-41199 · Unknown · Open-Webui

Published 2026-03-18 · Updated 2026-05-16 · CVE-2026-45666

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:N/AC:L/Au:S/C:C/I:N/A:N

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.8.11

Description The API endpoint '/api/v1/notes/{note id}' lacks proper authorization checks, allowing authenticated users to retrieve notes belonging to other users by guessing or enumerating note id UUIDs. This can lead to the unauthorized disclosure of sensitive or private user data. If the notes feature is disabled in the UI, an attacker can potentially enable it via the '/api/config' endpoint to facilitate the attack.

Recommendations Update to version 0.8.11 or later.

Exploit

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

BDU:2026-07457

CVE-2026-45666

GHSA-X3QM-P8HR-3C3H

Affected Products

Open-Webui

References · 9

• 🔥 https://github.com/open-webui/open-webui/security/advisories/GHSA-x3qm-p8hr-3c3h · Exploit
• https://osv.dev/vulnerability/GHSA-x3qm-p8hr-3c3h · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-07457 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-45666 · Security Note
• https://github.com/open-webui/open-webui · Note
• https://github.com/open-webui/open-webui/releases/tag/v0.8.11 · Note
• https://github.com/open-webui/open-webui/commit/de3317e26bb67a2a7ea015a183bbd1d369880ebd · Note
• https://t.me/CVEtracker/53989 · Telegram Post
• https://twitter.com/CVEnew/status/2055457505128358261 · Twitter Post