Open WebUI: Sign-in as another user via wildcard characters in the OAuth subject claim on SQLite

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.41 until 0.11.1, get_user_by_oauth_sub and get_user_by_scim_external_id in backend/open_webui/models/users.py used JSON contains matching that compiled to SQL LIKE substring matching on SQLite. An OAuth subject containing percent or underscore wildcard characters could resolve to a different stored identity, potentially selecting an administrator account and issuing the attacker that account's session; PostgreSQL deployments were not affected. This issue is fixed in version 0.11.1.

Open WebUI: Any authenticated user can hang the server via a cyclic chat message history

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.5.0 until 0.11.1, the message-chain reconstruction helper in backend/open_webui/utils/misc.py advanced through a chat history by map key but tracked visited entries using each message body's optional id field. An authenticated user could store id-less messages in a parent cycle and trigger a non-terminating walk that blocked the async event loop, grew memory until termination, and remained persistent across process restarts. This issue is fixed in version 0.11.1.

Open WebUI: Server-side fetches reach blocked and internal hosts via unvalidated HTTP redirect targets

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, server-side web fetches did not reapply WEB_FETCH_FILTER_LIST or private-address controls to HTTP redirect destinations when AIOHTTP_CLIENT_ALLOW_REDIRECTS was enabled. An authenticated user could redirect the aiohttp and requests fetch paths to excluded hosts, loopback, private networks, or cloud metadata services and route resulting content into web search, URL ingestion, page-fetch tools, or chat image processing. This issue is fixed in version 0.11.1.

Open WebUI: Any authenticated user can hang the server via message deletion in a cyclic chat tree

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, DELETE /api/v1/chats/{id}/messages/{message_id} used the chat-history deletion helper in backend/open_webui/models/chats.py to follow childrenIds without recording visited message identifiers. An authenticated user could store a cyclic chat tree and delete a message, causing a synchronous infinite loop on the server request loop that blocked every user's requests until the process was killed. This issue is fixed in version 0.11.1.

Exposure of Token in open-webui/open-webui

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

Open WebUI Cleartext Transmission of Credentials Information Disclosure Vulnerability

Open WebU's investigation showed that this describes the behavior of plain HTTP rather than a defect in the product. TLS termination is the operator's deployment decision, as it is for any backend that speaks HTTP, and not a security issue. https://docs.openwebui.com/security/vendor-dispositions/cve-2026-0767

Open WebUI load_tool_module_by_id Command Injection Remote Code Execution Vulnerability

Open WebU's investigation further investigation showed that this is intended functionality of the Plugins extension system, in which users granted the relevant permission author Python that the server executes by design, and not a security issue. https://docs.openwebui.com/security/vendor-dispositions/cve-2026-0766

Open WebUI PIP install_frontmatter_requirements Command Injection Remote Code Execution Vulnerability

Open WebU's investigation further investigation  showed that this is intended functionality of the Plugins extension system, in which users granted the relevant permission author Python that the server executes by design, and not a security issue. https://docs.openwebui.com/security/vendor-dispositions/cve-2026-0765

Remote Code Execution in OpenWebUI via Arbitrary File Upload

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

Open WebUI: Upload `metadata.knowledge_id` bypasses the knowledge-base write-access check (read-only users can add files to KB)

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, the file upload path accepted metadata.knowledge_id and auto-linked uploaded files to a target knowledge base without applying the write-access check used by /api/v1/knowledge//file/add, allowing read-only knowledge-base users to add arbitrary files. This issue is fixed in version 0.10.0.

Open WebUI: POST /api/v1/images/edit bypasses the global image-edit switch and the per-user image-generation permission

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.11 before 0.10.0, POST /api/v1/images/edit required only a verified account and did not enforce the global image-edit switch or the per-user image-generation permission, allowing a non-admin user to invoke server-side image editing with administrator-configured provider credentials. This issue is fixed in version 0.10.0.

Open WebUI: Cross-user code-interpreter and tool execution via unvalidated Socket.IO event-caller session_id

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, get_event_call delivered execute:python and execute:tool Socket.IO events to a client-supplied session_id after checking only that the session was connected, allowing authenticated users who learned another socket ID through ydoc:document:join to run code interpreter Python or tools in that user session. This issue is fixed in version 0.10.0.

open-webui terminal proxy path traversal guard bypass via 9x encoded traversal

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 before 0.10.0, _sanitize_proxy_path in backend/open_webui/routers/terminals.py decoded proxy paths only eight times, allowing a nine-times percent-encoded ../ traversal value to pass normalization checks and be decoded by the upstream terminal server. This issue is fixed in version 0.10.0.