Is CVE-2026-44564 actively exploited?

No active exploitation of CVE-2026-44564 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44564 be exploited remotely?

Yes. CVE-2026-44564 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44564?

CVE-2026-44564 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-44564

CWE-863Published: May 15, 2026· Updated: May 19, 2026

5.4

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.2th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-44564 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.