CVE-2026-45386
Medium
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, Pin/Unpin is a write operation (modifies the message's is_pinned , pinned_by, pinned_at fields), but in standard channels it only checks read permission, allowing users with read-only access to pin/unpin any message. This vulnerability is fixed in 0.9.5.
SeverityMedium
CVSS4.3
Exploit probability—
ProductOpenwebui Open Webui
PublishedMay 15, 2026
First seenMay 15, 2026
How to fix
Update
- openwebui open_webui0.9.5 or later
- open-webui0.9.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openwebui open_webui | v < 0.9.5 | 0.9.5 |
| open-webuiPyPI | v < 0.9.5 | 0.9.5 |
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