Improper Authorization in Open WebUI - #VU135954
Published: June 30, 2026
Vulnerability identifier: #VU135954
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-285
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 cause a denial of service.
The vulnerability exists due to improper authorization in the background automation scheduler when executing due scheduled automations for a deactivated owner. A remote user can keep a previously created automation scheduled and let it continue running after account deactivation to cause a denial of service.
Exploitation requires a previously created active automation and a later transition of the account to the pending role.
Remediation
Install security update from vendor's website.