Open WebUI allows limited stored XSS vila uploaded html file — CVE-2025-46571

Summary

### Summary 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…

Timeline

Published by source

2026-07-07

Risk context

• Reported severity or threat level: medium.
• Reported CVSS score: 6.4 out of 10.
• Reported EPSS value: 0.003.
• Review exposure for the affected product or family: pip: open-webui.

Product

pip: open-webui

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

CVE-2025-46571

Source

GitHub

Vendor

GitHub

Published by source

2026-07-07

Last source activity

2026-07-07

Additional identifiers

GHSA-8GH5-QQH8-HQ3X

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.