PYSEC-2026-2696 Open WebUI: Redis Cache Keys tool_servers and terminal_servers Missing Instance Prefix Enable Cross-Instance Cache Poisoning

Redis Cache Keys toolservers and terminalservers Missing Instance Prefix Enable Cross-Instance Cache Poisoning Affected Component Tool server and terminal server Redis cache: - backend/openwebui/utils/tools.py line 841, toolservers SET - backend/openwebui/utils/tools.py line 850, toolservers GET ...

PT-2026-59341

Redis Cache Keys tool servers and terminal servers Missing Instance Prefix Enable Cross-Instance Cache Poisoning Affected Component Tool server and terminal server Redis cache: - backend/open webui/utils/tools.py line 841, tool servers SET - backend/open webui/utils/tools.py line 850, tool server...

CVE-2026-44552 Open WebUI: Redis Cache Keys tool_servers and terminal_servers Missing Instance Prefix Enable Cross-Instance Cache Poisoning

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the toolservers and terminalservers keys in utils/tools.py do use a prefix. When two or more Open WebUI instances share a Redis database a supported and documented deployment pattern...

Open WebUI: Redis Cache Keys tool_servers and terminal_servers Missing Instance Prefix Enable Cross-Instance Cache Poisoning

Redis Cache Keys toolservers and terminalservers Missing Instance Prefix Enable Cross-Instance Cache Poisoning Affected Component Tool server and terminal server Redis cache: - backend/openwebui/utils/tools.py line 841, toolservers SET - backend/openwebui/utils/tools.py line 850, toolservers GET ...