CVE-2026-87014 Open WebUI: Admin demoted through SSO role sync keeps read and write access to all users' notes
Demoted administrators retain access to all users' notes via stale Socket.IO connections, allowing unauthorized data access and modification.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-87014?
CVE-2026-87014 is a medium-severity missing authorization vulnerability in Openwebui Open Webui, published on 9 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-87014?
3 open source packages ship an affected version, including open-webui. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
open-webui PyPI | From 0.9.0 | 0.11.1 |
open-webui PyPI | From 0.9.0 | 0.11.1 |
open-webui PyPI | From 0.9.0 | 0.11.1 |
Products include Openwebui Open Webui.
How do I fix CVE-2026-87014?
Upgrade open-webui to 0.11.1 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-87014 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-87014 exists.
Other vulnerabilities in Openwebui Open Webui
- CVE-2026-44551 Open WebUI: LDAP Empty Password Authentication Bypass
- CVE-2026-56400 open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation
- CVE-2024-8017 Cross-site Scripting (XSS) in open-webui/open-webui
- CVE-2026-45672 Open WebUI: Jupyter code execution works despite `ENABLE_CODE_EXECUTION=false` — feature gate bypassed
- CVE-2026-87995 Open WebUI: Same-origin XSS to account takeover via terminal port-preview iframe hardcoding allow-same-origin
Sources
Also known as GHSA-wjwr-xfp9-r66p, PYSEC-2026-4127.