PYSEC-2026-2705 Open WebUI has an IDOR vulnerability in the pin_channel_message API endpoint

Summary Pin/Unpin is a write operation modifies the message's ispinned , pinnedby, pinnedat fields, but in standard channels it only checks read permission, allowing users with read-only access to pin/unpin any message. Details...

PYSEC-2026-2739 Open WebUI's Improper Authorization in Standard Channels Allows Message Updates with Read Permission

Vulnerability Description In standard channels i.e., channels whose channel.type is neither group nor dm, the endpoint POST /api/v1/channels/channelid/messages/messageid/update can be accessed with read permission only. When accesscontrol is set to None, the authorization check hasaccess...,...

PYSEC-2026-2720 Open WebUI Missing Access Check on Channel Members Endpoint for Standard Channels

Missing Access Check on Channel Members Endpoint for Standard Channels Affected Component Channel members listing endpoint: - backend/openwebui/routers/channels.py lines 445-507, getchannelmembersbyid Affected Versions Current main branch and likely all versions with the channels feature...

CVE-2026-44571

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels i.e., channels whose channel.type is neither group nor dm, the endpoint POST /api/v1/channels/channelid/messages/messageid/update can be accessed with read...

CVE-2026-44571

CVE-2026-44571 concerns the Open WebUI platform. In standard channels, the endpoint POST /api/v1/channels/{channel_id}/messages/{message_id}/update could be invoked with only read permission if access_control is None, allowing unauthorized users to modify other users’ messages. The issue is fixed...

CVE-2026-44571 Open WebUI: Improper Authorization in Standard Channels Allows Message Updates with Read Permission

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels i.e., channels whose channel.type is neither group nor dm, the endpoint POST /api/v1/channels/channelid/messages/messageid/update can be accessed with read...

CVE-2026-44571

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels i.e., channels whose channel.type is neither group nor dm, the endpoint POST /api/v1/channels/channelid/messages/messageid/update can be accessed with read...

CVE-2026-44571 Open WebUI: Improper Authorization in Standard Channels Allows Message Updates with Read Permission

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels i.e., channels whose channel.type is neither group nor dm, the endpoint POST /api/v1/channels/channelid/messages/messageid/update can be accessed with read...

EUVD-2026-30655

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels i.e., channels whose channel.type is neither group nor dm, the endpoint POST /api/v1/channels/channelid/messages/messageid/update can be accessed with read...

CVE-2026-44571 Open WebUI: Improper Authorization in Standard Channels Allows Message Updates with Read Permission

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels i.e., channels whose channel.type is neither group nor dm, the endpoint POST /api/v1/channels/channelid/messages/messageid/update can be accessed with read...

CVE-2026-45386

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, Pin/Unpin is a write operation modifies the message's ispinned , pinnedby, pinnedat fields, but in standard channels it only checks read permission, allowing users with read-only...

CVE-2026-45386 Open WebUI: An IDOR vulnerability exists in the pin_channel_message API endpoint

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, Pin/Unpin is a write operation modifies the message's ispinned , pinnedby, pinnedat fields, but in standard channels it only checks read permission, allowing users with read-only...

CVE-2026-44559

Summary (CVE-2026-44559) Open WebUI’s channel membership endpoint has an access control flaw on standard channels. Prior to version 0.9.0, GET /api/v1/channels/{id}/members only enforced membership checks for channel types ‘group’ and ‘dm’; standard (including private) channels did not perform ch...

CVE-2026-44559 Open WebUI: Missing Access Check on Channel Members Endpoint for Standard Channels

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the GET /api/v1/channels/id/members endpoint only checks membership for group and dm channel types lines 467-469. For standard channels — including private ones — there is no...

CVE-2026-44559 Open WebUI: Missing Access Check on Channel Members Endpoint for Standard Channels

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the GET /api/v1/channels/id/members endpoint only checks membership for group and dm channel types lines 467-469. For standard channels — including private ones — there is no...

CVE-2026-44559 Open WebUI: Missing Access Check on Channel Members Endpoint for Standard Channels

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the GET /api/v1/channels/id/members endpoint only checks membership for group and dm channel types lines 467-469. For standard channels — including private ones — there is no...

GHSA-5GC6-XHV4-2WG6 Open WebUI has an IDOR vulnerability in the pin_channel_message API endpoint

Summary Pin/Unpin is a write operation modifies the message's ispinned , pinnedby, pinnedat fields, but in standard channels it only checks read permission, allowing users with read-only access to pin/unpin any message. Details...

Missing Authorization

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Missing Authorization in the updatemessagebyid process. An attacker can modify messages authored by other users by sending a request to the message update endpoint with only read permissions in a standard...

Open WebUI's Improper Authorization in Standard Channels Allows Message Updates with Read Permission

Vulnerability Description In standard channels i.e., channels whose channel.type is neither group nor dm, the endpoint POST /api/v1/channels/channelid/messages/messageid/update can be accessed with read permission only. When accesscontrol is set to None, the authorization check hasaccess...,...

GHSA-JGJ3-R8HR-9PJW Open WebUI's Improper Authorization in Standard Channels Allows Message Updates with Read Permission

Vulnerability Description In standard channels i.e., channels whose channel.type is neither group nor dm, the endpoint POST /api/v1/channels/channelid/messages/messageid/update can be accessed with read permission only. When accesscontrol is set to None, the authorization check hasaccess...,...