CVE-2026-87014

What it is

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, role synchronization in backend/open_webui/routers/auths.py and backend/open_webui/utils/oauth.py updated an administrator's database role without invalidating the user record cached by backend/open_webui/socket/main.py. An administrator demoted through a trusted role header or OAuth role mapping could keep an already-open Socket.IO connection and continue reading or editing every user's collaborative notes until that connection closed. This issue is fixed in version 0.11.1.

At a glance

Exploitability

Can be exploited over the network with an admin-level account. High risk of data exposure, data tampering.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-09-09 21:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-09-15 15:56 UTC Last updatedMost recent change to the record

Details

Published

2026-09-09 21:17 UTC

Last modified

2026-09-15 15:56 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-613

Record status

Analyzed

Affected

• Openwebui Open Webui < 0.11.1

Attack profile CVSS 3.1 · 6.5

Attack vector

Network

Complexity

Low

Privileges needed

High

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None