CVE-2026-45351 MEDIUM

CVE-2026-45351: Open WebUI: Exposure of System Prompt to Regular User [Non-Admin]

Vendor Open-Webui
Product open-webui
Weakness CWE-200 · Info exposure
Published May 15, 2026
Last update May 18, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.9, when a regular user [non-admin] logs into the application, a http://IP:8080/api/models? web request is initiated by the application and in response, it reveals the system prompt of available models set by admin on models pages in workspace affecting the confidentiality of application. This vulnerability is fixed in 0.8.9.

Key dates

02Disclosure timeline

May 15, 2026 CVE published
May 18, 2026 Record updated

Related vulnerabilities

04Related CVE

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