Vulnerability · Published May 5, 2025 · Assigned by GitHub_M
CVE-2025-46571Open WebUI vulnerable to limited stored XSS vila uploaded html file
Medium 5.3
In plain English
A medium-severity cross-site scripting in open-webui from open-webui. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | open-webui | 0.6.6 | GHSA-8gh5-qqh8-hq3x |
| PyPI | open-webui | 0.6.6 | PYSEC-2026-2713 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| open-webui | open-webui | < 0.6.6 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:P
References
- https://github.com/open-webui/open-webui/security/advisories/GHSA-8gh5-qqh8-hq3x x_refsource_CONFIRM
- https://github.com/open-webui/open-webui/commit/ef2aeb7c0eb976bac759e59ac359c94a5b8dc7e0 x_refsource_MISC
- https://github.com/open-webui/open-webui/blob/main/backend/open_webui/routers/files.py#L434-L438 x_refsource_MISC