Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.6, an unsanitized filename field in the speech-to-text transcription endpoint allows any authenticated non-admin user to trigger a `FileNotFoundError` whose message — including the server's absolute `DATA_DIR` path — is returned verbatim in the HTTP 400 response body, confirming information disclosure on all default deployments. Version 0.8.6 patches the issue.

INFO

Published Date :

2026-03-26T23:37:25.673Z

Last Modified :

2026-03-27T13:53:30.683Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-28786 vulnerability.

Vendors Products
Open-webui
  • Open-webui
Openwebui
  • Open Webui
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-28786.

URL Resource
https://github.com/open-webui/open-webui/security/advisories/GHSA-vvxm-vxmr-624h cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact