CVE-2026-44566CWE-22CWE-434

Open WebUI: Arbitrary File Upload and Path Traversal

High · published May 15, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
39.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00461 · 39.0th percentile
Weaknesses
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'); CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-05-15T21:01Z
EPSS history
Timeline
  • 15 MAY 21:01Z
    Open WebUI: Arbitrary File Upload and Path Traversal
    cvelistv5