Open WebUI has Stored Cross-Site Scripting In Profile Picture — CVE-2026-45299

Summary

## Summary The `profile_image_url` field on the user profile update form accepted arbitrary `data:` URI values without MIME-type validation. Two distinct attack paths were independently demonstrated by separate reporters: 1. **`data:text/html;base64,...` in a new browser tab** (raresvis, 2025-04-17) — when a victim right-clicks a user's profile picture and chooses "Open image in new tab", the browser navigates to…

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

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