Open WebUI: Low-privilege authenticated users can enumerate and stop global background tasks, causing system-wide chat disruption

Summary Any authenticated user with low privileges can enumerate active background tasks across the system and stop tasks belonging to other users via the GET /api/tasks and POST /api/tasks/stop/taskid methods. This allows a casual user to disrupt system-wide chat usage by continuously canceling...

PT-2026-41194

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.0 Description An authorization issue allows any authenticated user with low privileges to enumerate active background tasks across the system and stop tasks belonging to other users. This occurs because the...

CVE-2025-40178 pid: Add a judgment for ns null in pid_nr_ns

In the Linux kernel, the following vulnerability has been resolved: pid: Add a judgment for ns null in pidnrns taskpidnrns ns = taskactivepidnscurrent; pidnrnsrcudereferencetaskpidptrtask, type, ns; if pid && ns-level level Sometimes null is returned for taskactivepidns. Then it will trigger kern...