Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, the tool update endpoint (POST /api/v1/tools/id/{id}/update) is missing the workspace.tools permission check that is present on the tool create endpoint. This allows a user who has been explicitly denied tool management capabilities ( and who the administrator considers untrusted for code execution ) to replace a tool's server-side Python content and trigger execution, bypassing the intended workspace.tools security boundary. This vulnerability is fixed in 0.9.5.
Problem types
CWE-269: Improper Privilege Management
CWE-862: Missing Authorization
Product status
References
github.com/...-webui/security/advisories/GHSA-p4fx-23fq-jfg6
github.com/...-webui/security/advisories/GHSA-p4fx-23fq-jfg6