PYSEC-2026-2721 Open WebUI BOLA: `search_knowledge_files` Allows Unauthorized Knowledge Base File Enumeration

Summary Open WebUI has a Broken Object Level Authorization BOLA vulnerability in the builtin searchknowledgefiles tool. When native function calling is enabled and the selected model has no attached knowledge bases, an authenticated user can call searchknowledgefiles with an arbitrary knowledgeid...

PT-2026-50488

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.6 Description Open WebUI contains a Broken Object Level Authorization BOLA issue in the builtin search knowledge files function. BOLA occurs when an application does not properly verify if a user has permission...