CVE-2026-70494: Open WebUI folder deletion authorization bypass vulnerability

# CVE-2026-70494: Open WebUI folder deletion authorization bypass vulnerability

https://gcdradar.vercel.app/incidents/cve-2026-70494-open-webui-folder-deletion-authorization-bypa · AIR-2026-0045 · closed 2026-08-04

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-08-04
- AI role: Attack on AI
- Products: Open WebUI
- CVE ids: CVE-2026-70494
- CVSS: 8.1

## Summary

An authorization flaw in Open WebUI allows collaborators with write access to shared folders to permanently delete chats belonging to folder owners. The issue affects self-hosted instances prior to patching.

## What to do

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

## Latest updates

- 2026-08-04: CVE-2026-70494: Open WebUI: A folder write-collaborator can permanently delete the owner's chats by deleting a shared subfolder (https://github.com/advisories/GHSA-3cg5-48j3-v4gv)
- 2026-08-04: CVE-2026-70494: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. (https://nvd.nist.gov/vuln/detail/CVE-2026-70494)

## Sources

- 2026-08-04 NVD: CVE-2026-70494: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. https://nvd.nist.gov/vuln/detail/CVE-2026-70494
- 2026-08-04 GitHub Advisory Database: CVE-2026-70494: Open WebUI: A folder write-collaborator can permanently delete the owner's chats by deleting a shared subfolder https://github.com/advisories/GHSA-3cg5-48j3-v4gv

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