PYSEC-2026-2697 Open WebUI: Stale Admin Role in Socket.IO Session Pool Enables Post-Demotion Cross-User Note Access

Stale Admin Role in Socket.IO Session Pool Enables Post-Demotion Cross-User Note Access Affected Component Socket.IO session state and role-check callsites: - backend/openwebui/socket/main.py lines 330-351, connect handler — role snapshotted into SESSIONPOOL - backend/openwebui/socket/main.py lin...

PT-2026-39270

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.0 Description Administrative role changes and user deletions do not trigger the disconnection of affected sessions in the SESSION POOL. When a user connects via Socket.IO, their role is snapshotted into the...