CVE-2025-46571 Open WebUI vulnerable to limited stored XSS vila uploaded html file
Low-privileged users can upload malicious HTML files to trigger stored XSS, potentially leading to admin account takeover and remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-46571?
CVE-2025-46571 is a medium-severity cross-site scripting vulnerability in Openwebui Open Webui, published on 5 May 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.6, low privileged users can upload HTML files which contain JavaScript code via the `/api/v1/files/` backend endpoint. This endpoint returns a file id, which can be used to open the file in the browser and trigger the JavaScript code in the user's browser. Under the default settings, files uploaded by low-privileged users can only be viewed by admins or themselves, limiting the impact of this vulnerability. A link to such a file can be sent to an admin, and if clicked, will give the low-privileged user complete control over the admin's account, ultimately enabling RCE via functions. Version 0.6.6 contains a fix for the issue.
Weakness: CWE-79
Which versions are affected by CVE-2025-46571?
3 open source packages ship an affected version, including open-webui. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
open-webui PyPI | All versions | 0.6.6 |
open-webui PyPI | All versions | 0.6.6 |
open-webui PyPI | All versions | 0.6.6 |
Products include Openwebui Open Webui.
How do I fix CVE-2025-46571?
Upgrade open-webui to 0.6.6 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-46571 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-46571 exists.
Other vulnerabilities in Openwebui Open Webui
- CVE-2026-44551 Open WebUI: LDAP Empty Password Authentication Bypass
- CVE-2026-56400 open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation
- CVE-2024-8017 Cross-site Scripting (XSS) in open-webui/open-webui
- CVE-2026-45672 Open WebUI: Jupyter code execution works despite `ENABLE_CODE_EXECUTION=false` — feature gate bypassed
- CVE-2026-87995 Open WebUI: Same-origin XSS to account takeover via terminal port-preview iframe hardcoding allow-same-origin
Sources
Also known as GHSA-8gh5-qqh8-hq3x, PYSEC-2026-2713.