Authorization Bypass Through User-Controlled Key Affecting open-webui package, versions [,0.9.5)
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Authorization Bypass Through User-Controlled Key vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-PYTHON-OPENWEBUI-16755448
- published19 May 2026
- disclosed14 May 2026
- creditMrBeard-FT, Classic298
Introduced: 14 May 2026
NewCVE-2026-45402 (opens in a new tab)How to fix?
Upgrade open-webui to version 0.9.5 or higher.
Overview
open-webui is an Open WebUI
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the get_folders and process_chat_payload paths in the folder and chat handling code. An attacker can read files and knowledge collections they do not have access to by attaching them to a folder or causing chat processing to consume folder-backed RAG context, thereby exposing restricted content to the requester. The same issue also allows a user to add unreadable files to knowledge bases via the knowledge upload endpoints, causing private file contents to be ingested and surfaced through chat and retrieval features.