Missing Authorization in Open WebUI - #VU130175
Published: May 5, 2026
Vulnerability identifier: #VU130175
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-862
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 disclose sensitive information.
The vulnerability exists due to improper access control in the GET /api/v1/channels/{id}/members endpoint when handling requests for standard channels. A remote user can send a request for a private channel's member list to disclose sensitive information.
Channels must be enabled, and exploitation requires knowledge of the target channel UUID.
Remediation
Install security update from vendor's website.