CVE-2026-87015: Insertion of Sensitive Information Into Sent Data

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 until 0.11.1, backend/openwebui/utils/tools.py captured a cookie jar from the enclosing connection loop instead of binding it to each external tool callable. When multiple tool servers were attached...

CVE-2026-44552: Exposure of Resource to Wrong Sphere

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...