CVE-2026-45345

MEDIUM

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

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v3 6.5
EPSS 0.0003
EPSS Percentile 9.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-285
Status published
Products (3)
open-webui/open-webui < 0.5.7
openwebui/open_webui < 0.5.7
pypi/open-webui 0 - 0.5.7PyPI
Published May 15, 2026
Tracked Since May 16, 2026