CVE-2026-59212

creationtimestamp| type| source ---|---|--- 2026-07-24 22:35:07+00:00| published-proof-of-concept| https://github.com/open-webui/open-webui/security/advisories/GHSA-2xwm-4h2q-ggfx...

GHSA-FRVJ-C5QP-XJ4W open-webui terminal proxy path traversal guard bypass via 9x encoded traversal

AI assistance was used to help inspect the code and prepare this report. Summary The fix for GHSA-r2wg-2mcr-66rv is incomplete in v0.9.6 and current main. backend/openwebui/routers/terminals.py documents sanitizeproxypath as decoding until stable, but the implementation stops after 8 unquote...

Server-side Request Forgery (SSRF)

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the sanitizeproxypath process. An attacker can access unauthorized files or directories by submitting a specially crafted, deeply percent-encoded path parameter that bypass...

GHSA-M3QF-58WF-W979 Open WebUI: Arena task endpoints can bypass underlying model access controls

Summary 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 normal chat route resolves arena models before the final chat dispatch and therefore re-checks the selected...

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

Summary 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 normal chat route resolves arena models before the final chat dispatch and therefore re-checks the selected...

EUVD-2026-42634

Open WebUI: Model meta.knowledge read-only file access can be upgraded to file write/delete...

Open WebUI: Model meta.knowledge read-only file access can be upgraded to file write/delete

Summary Current main and v0.9.6 still allow an authenticated user to turn read-only access to another user's file into write/delete access by attaching that file ID to an attacker-controlled workspace model. This is an incomplete-fix variant of GHSA-vjqm-6gcc-62cr. The current fix adds...

Incorrect Authorization

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Incorrect Authorization through the meta.knowledge process. An attacker can gain unauthorized write or delete access to files belonging to other users by attaching a file ID, for which they only have read...

EUVD-2026-42633

Open WebUI: WEBFETCHFILTERLIST host allow/block filter bypassable via URL path and non-label-boundary matching...

Protection Mechanism Failure

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Protection Mechanism Failure through improper matching of hostnames in the WEBFETCHFILTERLIST process. An attacker can access hosts that should be blocked or bypass allowlists by crafting URLs with specific...

EUVD-2026-42631

Open WebUI: /api/v1/channels/id/members exposes full user model including sensitive credentials...

Information Exposure

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Information Exposure via the GET /api/v1/channels/id/members endpoint. An attacker can access sensitive configuration data, including webhook URLs and tool server credentials belonging to other users, by maki...

EUVD-2026-42630

Open WebUI: Private channel messages can be disclosed through cross-channel thread parentid binding...

Open WebUI: Private channel messages can be disclosed through cross-channel thread parent_id binding

Summary A normal authenticated user can read the content of a message in a private channel they do not belong to. GET /api/v1/channels/id/messages/messageid/thread authorizes the caller against the URL channel, but the underlying thread lookup loads the thread parent by id and returns it without...

Authorization Bypass Through User-Controlled Key

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the getmessagesbyparentid process. An attacker can access the content, channel ID, and author metadata of messages in private channels they do not belong t...

GHSA-73X5-H92W-XC2J Open WebUI: Private channel messages can be disclosed through cross-channel thread parent_id binding

Summary A normal authenticated user can read the content of a message in a private channel they do not belong to. GET /api/v1/channels/id/messages/messageid/thread authorizes the caller against the URL channel, but the underlying thread lookup loads the thread parent by id and returns it without...

EUVD-2026-42629

Open WebUI: Cross-user model-list exposure via static cache key in getallmodels aiocache key= vs keybuilder= misuse...

Use of Cache Containing Sensitive Information

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Use of Cache Containing Sensitive Information in the getallmodels process due to improper cache key configuration, which causes permission-filtered model lists to be shared across users. An attacker can acces...

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

Open WebUI upload metadata can add files to knowledge bases without write permission Summary Open WebUI's file upload background processing trusts the client-supplied metadata.knowledgeid value and inserts a knowledgefile association before validating that the uploading user has write access to t...

Incorrect Authorization

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Incorrect Authorization in the processuploadedfile process. An attacker can modify the file membership of a knowledge base without proper authorization by supplying a crafted metadata.knowledgeid value during...