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-2026-59218 Open WebUI: Account enumeration via observable login timing discrepancy

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-2026-59218

Open WebUI prior to version 0.10.0 exposed an account enumeration flaw in the /api/v1/auths/signin endpoint. The login flow looked up users by email and only performed bcrypt verification when a credential existed, causing registered accounts to respond more slowly than missing email attempts. Th...

CVE-2026-59218 Open WebUI: Account enumeration via observable login timing discrepancy

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-2026-59218 Open WebUI: Account enumeration via observable login timing discrepancy

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-2026-59214 Open WebUI: Stored web worker XSS via Pyodide

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs client-side Python with Pyodide in a same-origin web worker, allowing stored chat payloads that use pyodide.http.pyfetch or the js module fetch and XMLHttpRequest APIs to issue...

CVE-2026-59214 Open WebUI: Stored web worker XSS via Pyodide

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs client-side Python with Pyodide in a same-origin web worker, allowing stored chat payloads that use pyodide.http.pyfetch or the js module fetch and XMLHttpRequest APIs to issue...

CVE-2026-59214

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs client-side Python with Pyodide in a same-origin web worker, allowing stored chat payloads that use pyodide.http.pyfetch or the js module fetch and XMLHttpRequest APIs to issue...

CVE-2026-59214

Open WebUI (self-hosted AI platform) is affected by a vulnerability described as a stored web worker XSS via Pyodide. Prior to version 0.10.0, the platform runs client-side Python with Pyodide inside a same-origin web worker, which could allow stored chat payloads using pyodide.http.pyfetch or th...

CVE-2026-59214 Open WebUI: Stored web worker XSS via Pyodide

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs client-side Python with Pyodide in a same-origin web worker, allowing stored chat payloads that use pyodide.http.pyfetch or the js module fetch and XMLHttpRequest APIs to issue...

PT-2026-56880

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.6.27 through 0.9.x Description The get all models handlers in routers/openai.py and routers/ollama.py incorrectly pass a lambda to the aiocache key instead of the key builder. This causes permission-filtered per-user mode...

PT-2026-56881

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.10.0 Description An issue exists in the channel thread parent and reply handling where the parent id is not bound to the channel in the URL. This allows an authenticated user to reference a message from a differe...

PT-2026-56884

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.0 through 0.9.x Description When Redis is configured, the authentication process for Socket.IO connect, user-join, join-channels, join-note, and the terminal websocket first-message uses the decode token function withou...

PT-2026-56888

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.8.12 through 0.9.x Description An authenticated non-admin user with read access to an arena wrapper model can access a restricted underlying model. This occurs because task endpoints, such as...

PT-2026-56832

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.6.16 through 0.9.x Description The Socket.IO server is configured with always connect=True, which allows the ydoc:awareness:update and ydoc:document:leave Socket.IO handlers to accept collaborative-document events without...

CVE-2026-59222: Exposure of Sensitive Information to an Unauthorized Actor

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.7.0 before 0.10.0, GET /api/v1/channels//members returned full UserModelResponse objects for channel members, including settings.ui.toolServers.key and webhook configuration, allowing a normal channel...

CVE-2026-59221: Improper Limitation of a Pathname to a Restricted Directory

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 before 0.10.0, sanitizeproxypath in backend/openwebui/routers/terminals.py decoded proxy paths only eight times, allowing a nine-times percent-encoded ../ traversal value to pass normalization checks...

CVE-2026-59224: Improper Authentication

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-2026-59215: Authorization Bypass Through User-Controlled Key

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, channel thread parent and reply handling did not bind parentid to the channel in the URL, allowing an authenticated user to reference a message from another private or DM channel and disclose...

CVE-2026-59217: Missing Authorization

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.knowledgeid and auto-linked uploaded files to a target knowledge base without applying the write-access check used by /api/v1/knowledge//file/add, allowing...