Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the is_user_channel_member function checks whether a ChannelMember row exists but does not check the is_active field. When a user is deactivated from a group or DM channel (removed by the channel owner, or leaves voluntarily), their membership row persists with is_active=False and status='left'. Because the authorization check ignores this field, the deactivated user retains full read and write access to the channel via direct API calls. This vulnerability is fixed in 0.9.0.
References
| Link | Resource |
|---|---|
| https://github.com/open-webui/open-webui/security/advisories/GHSA-hmgr-67hw-j2cq | Exploit Mitigation Vendor Advisory |
| https://github.com/open-webui/open-webui/security/advisories/GHSA-hmgr-67hw-j2cq | Exploit Mitigation Vendor Advisory |
Configurations
History
19 May 2026, 03:10
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:* | |
| First Time |
Openwebui
Openwebui open Webui |
|
| References | () https://github.com/open-webui/open-webui/security/advisories/GHSA-hmgr-67hw-j2cq - Exploit, Mitigation, Vendor Advisory |
15 May 2026, 21:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/open-webui/open-webui/security/advisories/GHSA-hmgr-67hw-j2cq - |
15 May 2026, 20:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-15 20:16
Updated : 2026-05-19 03:10
NVD link : CVE-2026-44561
Mitre link : CVE-2026-44561
CVE.ORG link : CVE-2026-44561
JSON object : View
Products Affected
openwebui
- open_webui
CWE
CWE-863
Incorrect Authorization