CVE-2026-44566

Open WebUI: Arbitrary File Upload and Path Traversal

State: Published
Severity: 7.3 High
Published: May 15, 2026
Updated: May 19, 2026
Reserved: May 6, 2026

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, when attaching files to a promp, the name of the file is derived from the original HTTP upload request and is not validated or sanitized. This allows for users to upload files with names containing dot-segments in the file path and traverse out of the intended uploads directory. Effectively, users can upload files anywhere on the filesystem the user running the web server has permission. This vulnerability is fixed in 0.1.124.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L	GitHub_M

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-434 Unrestricted Upload of File with Dangerous Type

Affected Products

Product	Versions
open-webuiopen-webui	< 0.1.124Affected

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-9pgh-j74g-qj6m

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