---
id: CVE-2026-70494
title: >-
  Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI
  platform
summary: >-
  Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI
  platform. From 0.10.0 until 0.11.0, the DELETE /api/v1/folders/{id} handler in
  backend/open_webui/routers/folders.py allowed a user granted write access to a
  sha…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'
cwe:
  - CWE-862
  - CWE-863
vendor: openwebui
product: open_webui
affected:
  - 'open_webui >= 0.10.0, < 0.11.0'
patched:
  - open_webui 0.11.0
published: '2026-08-04'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T14:45:25.090'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70494'
references:
  - url: >-
      https://github.com/open-webui/open-webui/commit/915ef7d0798d3175819cedbb2f62d7bf0db78c98
    label: security-advisories@github.com
  - url: 'https://github.com/open-webui/open-webui/pull/27003'
    label: security-advisories@github.com
  - url: 'https://github.com/open-webui/open-webui/releases/tag/v0.11.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/open-webui/open-webui/security/advisories/GHSA-3cg5-48j3-v4gv
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-3cg5-48j3-v4gv'
tags:
  - nvd
  - ghsa
  - pip
epss: 0.00548
epssPercentile: 0.43461
aliases:
  - GHSA-3cg5-48j3-v4gv
ecosystem: pip
ingestedAt: '2026-08-04T21:42:19.579Z'
---

## Overview

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.0, the DELETE /api/v1/folders/{id} handler in backend/open_webui/routers/folders.py allowed a user granted write access to a shared chat folder to permanently delete chats and messages belonging to the folder owner. The cascade following the authorization check is bound to the folder owner's id, but the subfolder check accepted any inherited write grant instead of requiring ownership or administrator status. A collaborator can destroy the owner's subtree or force-move chats out of it when delete_contents=false. This issue is fixed in 0.11.0.

## Affected

- `open_webui >= 0.10.0, < 0.11.0`

## Remediation

Upgrade past the affected range:

- `open_webui 0.11.0`

## Package advisory (CVE-2026-70494)

Affected packages:

- `open-webui >= 0.10.0, < 0.11.0`

Patched in:

- `open-webui 0.11.0`

Source: https://github.com/advisories/GHSA-3cg5-48j3-v4gv