CVE-2026-59214
High
Description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs client-side Python with Pyodide in a same-origin web worker, allowing stored chat payloads that use pyodide.http.pyfetch or the js module fetch and XMLHttpRequest APIs to issue authenticated same-origin requests when a victim clicks Run, which can reach admin-only endpoints and execute server-side code through configured tools. This issue is fixed in version 0.10.0.
SeverityHigh
CVSS7.3
Exploit probability37. percentile0.4%
ProductOpenwebui Open Webui
PublishedJul 9, 2026
First seenJul 9, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- openwebui open_webui0.10.0 or later
- open-webui0.10.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openwebui open_webui | v < 0.10.0 | 0.10.0 |
| open-webuiPyPI | v < 0.10.0 | 0.10.0 |
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