Open WebUI Missing Permission Check in Files API

# Open WebUI Missing Permission Check in Files API

https://gcdradar.vercel.app/incidents/open-webui-missing-permission-check-in-files-api · AIR-2026-0657 · closed 2026-05-14

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-05-14
- AI role: Attack on AI
- Products: Open WebUI
- CVE ids: CVE-2026-45301
- CVSS: 8.1

## Summary

A missing permission check in Open WebUI files endpoints allows authenticated users to list, access, and delete files uploaded by other users. A patch has been issued to address the vulnerability.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-05-15: CVE-2026-45301: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. (https://nvd.nist.gov/vuln/detail/CVE-2026-45301)
- 2026-05-14: CVE-2026-45301: Open WebUI: Missing permission check in files API allows authenticated users to list, access and delete every uploaded file (https://github.com/advisories/GHSA-r8wh-8m7r-fh33)

## Sources

- 2026-05-14 GitHub Advisory Database: CVE-2026-45301: Open WebUI: Missing permission check in files API allows authenticated users to list, access and delete every uploaded file https://github.com/advisories/GHSA-r8wh-8m7r-fh33
- 2026-05-15 NVD: CVE-2026-45301: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. https://nvd.nist.gov/vuln/detail/CVE-2026-45301

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.