CVE-2026-54016

Medium

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI has a Broken Object Level Authorization (BOLA) vulnerability in the builtin search_knowledge_files tool. When native function calling is enabled and the selected model has no attached knowledge bases, an authenticated user can call search_knowledge_files with an arbitrary knowledge_id. The function then returns file metadata from that knowledge base without checking whether the user has read access. This allows unauthorized enumeration of private or restricted knowledge base files. This vulnerability is fixed in 0.9.6.

SeverityMedium

CVSS4.3

Exploit probability—

ProductOpenwebui Open Webui

PublishedJun 23, 2026

First seenJun 23, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

openwebui open_webui0.9.6 or later
open-webui0.9.6 or later

Affected products

Product	Affected versions	Fixed in
openwebui open_webui	v < 0.9.6	0.9.6
open-webuiPyPI	v < 0.9.6	0.9.6

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