NuytsTech Security

CVE-2025-63681

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open-webui v0.6.33 is vulnerable to Incorrect Access Control. The API /api/tasks/stop/ directly accesses and cancels tasks without verifying user ownership, enabling attackers (a normal user) to stop arbitrary LLM response tasks.

More information : https://github.com/TOAST-Research/pocs/blob/main/openwebui/arbitirary_task_stop/report.md

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