The vulnerability of the get_sources_from_items() function in the Open WebUI artificial intelligence-based web interface allows a intruder to gain unauthorized access to protected information.

The vulnerability of the getsourcesfromitems function in the Open WebUI AI-based web interface is related to deficiencies in the authentication process. Exploiting this vulnerability could allow an attacker to gain unauthorized access to protected information through the Range Addressing RAG...

The vulnerability of the Open WebUI web interface, related to the lack of authentication, allows a intruder to gain unauthorized access to protected information.

The vulnerability of the Open WebUI web interface lies in the lack of authentication when processing the endpoint /api/v1/channels/id/members with a known channel UUID. Exploiting this vulnerability could allow an attacker to gain unauthorized access to protected information...

The vulnerability in the Open WebUI web interface relates to the disclosure of information in the erroneous data area, allowing an intruder to obtain unauthorized access to the protected information.

The vulnerability of the Open WebUI artificial intelligence-based web interface is related to the disclosure of information in the erroneous data area. Exploiting this vulnerability can allow an attacker, operating remotely, to gain unauthorized access to protected information...

The vulnerability of the _sanitize_proxy_path() function (backend/open_webui/routers/terminals.py) in the Open WebUI AI-based web interface allows a attacker to compromise the confidentiality of protected information.

The vulnerability of the sanitizeproxypath function backend/openwebui/routers/terminals.py in the Open WebUI AI-based web interface is related to an incorrect restriction on the path name of the restricted directory. Exploiting this vulnerability could allow a malicious actor to compromise the...

The vulnerability of the innerHTML component of the Open WebUI web interface allows a attacker to execute arbitrary JavaScript code.

The vulnerability of the innerHTML component in the Open WebUI-based web interface is related to the lack of measures taken to protect the structure of the web page. Exploiting this vulnerability allows a remote attacker to execute arbitrary JavaScript code...

PT-2026-59369

Summary A user can modify another user's model even if its visibility is set to Private. The finding resulted from a penetration test for a customer. It is suspected that the root cause of the issue lies within the core of Open WebUI, which is why it is being reported as a security issue here...

PT-2026-59402

Summary Open WebUI lets a user who can create, update, or import workspace models store arbitrary meta.knowledge entries on their model without checking whether they own or can read the referenced files. Open WebUI then treats meta.knowledge entries of type file as an authorization source in two...

PT-2026-59350

Vulnerability Type: Information Disclosure / Missing Authentication Severity: Medium Component: backend/open webui/routers/retrieval.py — get status GET / Affected Endpoint: GET /api/v1/retrieval/ Affected Version: Open WebUI main branch — confirmed unpatched through v0.9.2 Authentication Require...

PT-2026-59378

Summary A path traversal vulnerability exists in open-webui's cache file serving endpoint that allows any authenticated user to read files from sibling directories outside the intended cache directory, by exploiting an incomplete startswith containment check that lacks a trailing path separator...

PT-2026-59360

CONFIDENTIAL KL-CAN-2024-002 Vulnerability Details | | Field | Value | |---|-------|-------| | 1 | Discoverer | Jaggar Henry & Sean Segreti of KoreLogic, Inc. | | 2 | Date Submitted | 2024.03.12 | | 3 | Title | Open WebUI Arbitrary File Upload + Path Traversal | | 5 | Affected Vendor | Open WebUI...

PT-2026-59400

Summary Open WebUI renders Mermaid blocks from Markdown files in the file preview panel and inserts the generated SVG into the DOM using innerHTML. Because Mermaid is configured with securityLevel: 'loose', attacker-controlled Mermaid content can be rendered unsafely in this flow. A working paylo...

PT-2026-59379

CONFIDENTIAL Vulnerability Disclosure Analysis Documentation ----------------------------------------------- Vulnerability Details --------------------- 1. Discoverer: Taylor Pennington of KoreLogic, Inc. 2. Date Submitted: June 11, 2024 3. Title: Open WebUI Arbitrary File Write, Delete via Path...

PT-2026-59347

CONFIDENTIAL Vulnerability Disclosure Analysis Documentation --- Vulnerability Details | | Field | Value | |---|-------|-------| | 1 | Discoverer | Taylor Pennington of KoreLogic, Inc. | | 2 | Date Submitted | June 11, 2024 | | 3 | Title | Open WebUI Improper Authorization Control | | 5 | Affecte...

PT-2026-59373

Related advisory This advisory tracks a regression of the original Excel-preview XSS that was publicly disclosed and patched under GHSA-jwf8-pv5p-vhmc patched in v0.8.0. The same root cause — XLSX.utils.sheet to html output rendered via @html excelHtml without DOMPurify — was reintroduced sometim...

PT-2026-59398

Stored XSS to Account Takeover via Model Profile Images in Open WebUI Affected: Open WebUI tags. On the output side, users.py added a MIME allowlist check and X-Content-Type-Options: nosniff. The fix was applied to UserUpdateForm, UpdateProfileForm, and later to ChannelWebhookForm. Three models...

PT-2026-59353

Summary Broken Access Control in Tool Valves Open WebUI supports function calling through "Tools". Function calling allows an LLM to reliably connect to external tools and interact with external APIs. Exemplary use-cases include connecting to an internal knowledge base, retrieving emails from an...

PT-2026-59390

Summary The audio transcription upload endpoint takes the file extension from the user-supplied filename and saves the file under CACHE DIR/audio/transcriptions/.. The /cache/path route serves these files via FileResponse, which sets Content-Type from the on-disk extension and emits no...

PT-2026-59339

As part of our research on improving our AI pentest, we have uncovered the following issue in Open WebUI. We've manually verified and tided up the report, but you can also find the original agent finding at the bottom of this report. Summary The channel webhook create/update flow accepts arbitrar...

PT-2026-59345

Summary Open WebUI v0.6.43 contains a vulnerability in its chat completion API, which allows attackers to bypass tool restrictions, potentially enabling unauthorized actions or access. Details In the chat completion API, the parameters tool ids and tool servers are supplied by the user. These...

PT-2026-59362

Base Model Routing Bypasses Access Control via Model Chaining Affected Component Model chaining via base model id: - backend/open webui/routers/models.py lines 170-214, create new model - backend/open webui/routers/models.py lines 254-308, import models - backend/open webui/main.py lines 1696-171...