CVE-2026-70490

Open WebUI (self-hosted AI platform) versions 0.8.8–0.11.0 contain a flaw where the terminal WebSocket route in backend/open_webui/routers/terminals.py authenticates its own first-message JWT and omits the verified-user role gate enforced on HTTP terminal routes. As a result, accounts with pendin...

GHSA-H6X2-583H-X99R Open WebUI: DNS Rebinding SSRF Bypass

Summary Open WebUI vetted user-supplied URLs by resolving the hostname once and rejecting private, loopback and link-local addresses, then let the HTTP client resolve that hostname again at connect time. An attacker who controls the authoritative DNS for a hostname they submit can answer with a...

CVE-2026-70483 Open WebUI: Any authenticated user can cancel another user's chat generation via the chat delete endpoint

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, DELETE /api/v1/chats/id cancelled a chat's in-flight tasks before checking whether the caller could delete that chat. Any authenticated user who knew another user's chat id could abort...

EUVD-2026-42650

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

EUVD-2026-42639

Open WebUI: Arena task endpoints can bypass underlying model access controls...

EUVD-2026-42628

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

EUVD-2026-42627

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

EUVD-2026-42617

Open WebUI: Account enumeration via observable login timing discrepancy...

PYSEC-2026-2743 Open WebUI: SSRF Protection Bypass in Playwright Web Loader via HTTP Redirects

Summary The SafePlaywrightURLLoader implements a validateurl function to prevent SSRF attacks by checking the IP address of the user-provided URL. However, this validation is performed only on the initial URL. Since Playwright automatically follows HTTP redirects 301/302 by default, an attacker c...

PYSEC-2026-2711 Open WebUI's Channel Access Grants Bypass filter_allowed_access_grants

Channel Access Grants Bypass filterallowedaccessgrants Affected Component Channel creation and update endpoints: - backend/openwebui/routers/channels.py lines 291-340, createnewchannel - backend/openwebui/routers/channels.py lines 617-638, updatechannelbyid - backend/openwebui/models/channels.py...

PYSEC-2026-2765 Open WebUI's Insecure Direct Object Reference (IDOR) allows access to other users' memories

Summary Any authenticated user can read other users' private memories via /api/v1/retrieval/query/collection Details Vulnerability 1: Missing authorization in collection querying In backend/openwebui/routers/retrieval.py, the querycollectionhandler function accepts a list of collectionnames but...

CVE-2026-59225

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.12 before 0.10.0, an authenticated non-admin user with read access to an arena wrapper model can reach a restricted underlying model through task endpoints such as /api/v1/tasks/moa/completions. The...

CVE-2026-59213

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 before 0.10.0, getallmodels handlers in routers/openai.py and routers/ollama.py passed a lambda to aiocache key instead of keybuilder, causing permission-filtered per-user model lists to share a stat...

CVE-2026-59218

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, the /api/v1/auths/signin endpoint looked users up by email and only ran bcrypt password verification when a credential existed, making registered-account attempts measurably slower than...

CVE-2026-59224 Open WebUI: Terminal proxy forwards a spoofable, integrity-unbound user identity to the upstream (X-User-Id header and ws_terminal session_id query injection)

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, backend/openwebui/routers/terminals.py built the wsterminal upstream URL from an unencoded sessionid and appended userid as a query parameter, allowing query injection to make the terminal backe...

CVE-2026-59220

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.2 before 0.10.0, the SKILLMENTIONRE and stripre regular expressions in backend/openwebui/utils/middleware.py parsed skill mentions with overlapping quantifiers, allowing an authenticated chat message...

PT-2026-56830

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.0 through 0.9.x Description The execute automation function rehydrated automation owners without verifying if they remained active or retained features.automations permissions. Additionally, the check model access...

PT-2026-56879

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.6 through 0.9.9 Description An issue exists where the verify knowledge file access function only validates read access. Subsequently, file write and delete routes trust object-derived access via writable meta.knowledge...

PYSEC-2026-1743 Open WebUI has SSRF in /openai/models

The /openai/models endpoint in open-webui/open-webui version 0.3.8 is vulnerable to Server-Side Request Forgery SSRF. An attacker can change the OpenAI URL to any URL without checks, causing the endpoint to send a request to the specified URL and return the output. This vulnerability allows the...

PYSEC-2026-1740 Open WebUI Allows Admin Deletion via API Endpoint

In open-webui/open-webui version v0.3.8, there is an improper privilege management vulnerability. The application allows an attacker, acting as an admin, to delete other administrators via the API endpoint http://0.0.0.0:8080/api/v1/users/uuidadministrator. This action is restricted by the user...