Missing Authorization Affecting open-webui package, versions [,0.9.6)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published22 Jun 2026
- disclosed17 Jun 2026
- creditHwwg
Introduced: 17 Jun 2026
CVE-2026-54016 (opens in a new tab)How to fix?
Upgrade open-webui to version 0.9.6 or higher.
Overview
open-webui is an Open WebUI
Affected versions of this package are vulnerable to Missing Authorization in the search_knowledge_files function when native function calling is enabled and the selected model has no attached knowledge bases. An attacker can retrieve metadata for files from private or restricted knowledge bases by supplying an arbitrary knowledge_id without proper authorization checks. This is only exploitable if the attacker is authenticated, knows the target knowledge_id, the selected model has no attached knowledge bases, builtin tools are enabled, the knowledge builtin tool category is enabled, and native function calling is enabled.