CVE-2026-45301

Open WebUI: Missing permission check in files API allows authenticated users to list, access and delete every uploaded file

State: Published
Severity: 8.1 High
Published: May 15, 2026
Updated: May 19, 2026
Reserved: May 11, 2026

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Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.3.16, a missing permission check in all files related API endpoints allows any authenticated user to list, access and delete every file uploaded by every user to the platform. This vulnerability is fixed in 0.3.16.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N	GitHub_M

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
open-webuiopen-webui	< 0.3.16Affected

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-r8wh-8m7r-fh33

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