cvedb.io
CVE-2026-44564
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2026-05-15T20:16:48.130 · Last modified 2026-06-17T10:50:48.053

Summary

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the ydoc:document:update Socket.IO event handler checks whether the sender is a member of the document's Socket.IO room (line 678) but does not verify that the sender has write permission. Users with read-only access join the document room via ydoc:document:join, which only requires read permission (line 520). Once in the room, the user can emit ydoc:document:update events that modify the in-memory Yjs document state and are broadcast to all other collaborators in real time. This vulnerability is fixed in 0.9.0.

Affected products

openwebui — open_webui

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.