CVE-2026-59222 Open WebUI: /api/v1/channels/{id}/members exposes full user model including sensitive credentials

What is CVE-2026-59222?

CVE-2026-59222 is a medium-severity vulnerability in Openwebui Open Webui, published on 9 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.7.0 before 0.10.0, GET /api/v1/channels//members returned full UserModelResponse objects for channel members, including settings.ui.toolServers[].key and webhook configuration, allowing a normal channel participant to retrieve other users’ sensitive settings. This issue is fixed in version 0.10.0.

Weakness: CWE-200

Which versions are affected by CVE-2026-59222?

3 open source packages ship an affected version, including open-webui. It affects 1 product.

Products include Openwebui Open Webui.

How do I fix CVE-2026-59222?

Upgrade open-webui to 0.10.0 or later.

Is CVE-2026-59222 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59222 exists.

Other vulnerabilities in Openwebui Open Webui

• CVE-2026-44551 Open WebUI: LDAP Empty Password Authentication Bypass Critical 9.1
• CVE-2026-56400 open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation Critical 9.0
• CVE-2024-8017 Cross-site Scripting (XSS) in open-webui/open-webui Critical 9.0
• CVE-2026-45672 Open WebUI: Jupyter code execution works despite `ENABLE_CODE_EXECUTION=false` — feature gate bypassed High 8.8
• CVE-2026-87995 Open WebUI: Same-origin XSS to account takeover via terminal port-preview iframe hardcoding allow-same-origin High 8.7

All Openwebui Open Webui vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-gh7p-78x6-jw6m, PYSEC-2026-3598.