Incorrect authorization in Open WebUI - #VU135955
Published: June 30, 2026
Vulnerability identifier: #VU135955
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Open WebUI
Affected software:
Open WebUI
Open WebUI
Detailed vulnerability description
The vulnerability allows a remote user to bypass model access restrictions.
The vulnerability exists due to incorrect authorization in model access control checks when validating access for a stored automation model ID. A remote user can rely on a pending role falling through the access-control logic to bypass model access restrictions.
This issue affects non-admin roles because private-model grants were enforced only for the exact role user.
Remediation
Install security update from vendor's website.