CVE-2026-44557

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the validatecollectionaccess function uses an incomplete allowlist that only enforces ownership checks for collections matching user-memory- and file- patterns. All other collection...

CVE-2026-44558

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the channel router does not call filterallowedaccessgrants on either create or update paths. A non-admin user who can create group channels or who owns a channel can submit arbitrary...

CVE-2026-44560

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the type: "file" non-full-context, type: "text" with collectionname, and bare collectionname/collectionnames paths in the getsourcesfromitems function perform vector store queries...

CVE-2026-44561

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the isuserchannelmember function checks whether a ChannelMember row exists but does not check the isactive field. When a user is deactivated from a group or DM channel removed by the...

CVE-2026-44562

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the POST /api/v1/models/import endpoint allows users with the workspace.modelsimport permission to overwrite any existing model in the database, regardless of ownership. When an...

CVE-2026-44550

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, FolderForm uses modelconfig = ConfigDictextra='allow', which permits arbitrary fields to pass through Pydantic validation and be included in modeldumpexcludeunset=True. In...

CVE-2026-44551

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the LDAP authentication endpoint does not validate that the submitted password is non-empty before performing a Simple Bind against the LDAP server. The LdapForm Pydantic model accep...

CVE-2026-44552

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the toolservers and terminalservers keys in utils/tools.py do use a prefix. When two or more Open WebUI instances share a Redis database a supported and documented deployment pattern...

CVE-2026-44555

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, Open WebUI supports model composition via basemodelid: a user-defined model e.g., "Cheap Assistant" can reference an existing base model e.g., "gpt-4-turbo-restricted" that provides...

CVE-2026-44553

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, administrative role changes and user deletions do not iterate SESSIONPOOL to disconnect affected sessions. As a result, a user whose admin role has been revoked retains admin...

CVE-2026-44554

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the POST /api/v1/retrieval/process/web endpoint accepts a user-supplied collectionname and an overwrite query parameter default: True. It performs no authorization check on whether t...

CVE-2026-44721 Open WebUI: Stored XSS via Model Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a stored cross-site scripting XSS vulnerability that allows any authenticated user with model creation permission workspace.models to execute arbitrary JavaScript in the browser of a...

CVE-2026-44721 Open WebUI: Stored XSS via Model Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a stored cross-site scripting XSS vulnerability that allows any authenticated user with model creation permission workspace.models to execute arbitrary JavaScript in the browser of a...

CVE-2026-44721 Open WebUI: Stored XSS via Model Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a stored cross-site scripting XSS vulnerability that allows any authenticated user with model creation permission workspace.models to execute arbitrary JavaScript in the browser of a...

CVE-2026-44721

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a stored cross-site scripting XSS vulnerability that allows any authenticated user with model creation permission workspace.models to execute arbitrary JavaScript in the browser of a...

EUVD-2026-30625

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a stored cross-site scripting XSS vulnerability that allows any authenticated user with model creation permission workspace.models to execute arbitrary JavaScript in the browser of a...

CVE-2026-44550 Open WebUI: Mass Assignment via Pydantic extra='allow' Allows Creating Folders in Other Users' Accounts

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, FolderForm uses modelconfig = ConfigDictextra='allow', which permits arbitrary fields to pass through Pydantic validation and be included in modeldumpexcludeunset=True. In...

CVE-2026-44550 Open WebUI: Mass Assignment via Pydantic extra='allow' Allows Creating Folders in Other Users' Accounts

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, FolderForm uses modelconfig = ConfigDictextra='allow', which permits arbitrary fields to pass through Pydantic validation and be included in modeldumpexcludeunset=True. In...

CVE-2026-44550

Open WebUI prior to 0.9.0 vulnerable to mass assignment via Pydantic extra='allow' in FolderForm. The server constructs a FolderModel by merging attacker-controlled extra fields (from form_data.model_dump(exclude_unset=True)) over a server-populated user_id, and because user_id is a real field, a...

EUVD-2026-30603

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, FolderForm uses modelconfig = ConfigDictextra='allow', which permits arbitrary fields to pass through Pydantic validation and be included in modeldumpexcludeunset=True. In...