CVE-2026-45345CWE-285

Open WebUI: Missing authorization check at the model update function - models from other users can be updated

Medium · published May 15, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
25.8
In the wild
Unconfirmed
What it is

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.5.7, a user can modify another user's model even if its visibility is set to Private. By changing the access permissions during editing, unauthorized access can be gained. This vulnerability is fixed in 0.5.7.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00336 · 25.8th percentile
Weakness
CWE-285 · Improper Authorization
Published
2026-05-15T21:17Z
EPSS history
Timeline
  • 15 MAY 21:17Z
    Open WebUI: Missing authorization check at the model update function - models from other users can be updated
    cvelistv5