CVE-2026-45301
High
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.3.16, a missing permission check in all files related API endpoints allows any authenticated user to list, access and delete every file uploaded by every user to the platform. This vulnerability is fixed in 0.3.16.
SeverityHigh
CVSS8.1
Exploit probability—
ProductOpenwebui Open Webui
PublishedMay 15, 2026
First seenMay 15, 2026
Weakness typeCWE-284Improper access control
How to fix
Update
- openwebui open_webui0.3.16 or later
- open-webui0.3.16 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openwebui open_webui | v < 0.3.16 | 0.3.16 |
| open-webuiPyPI | v < 0.3.16 | 0.3.16 |
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