---
id: CVE-2026-87998
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 0.11.1, DELETE /api/v1/knowledge/{id}/delete in
  backend/open_webui/routers/knowledge.py authorized deletion against the
  knowledge bas…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L'
cwe:
  - CWE-269
  - CWE-863
vendor: openwebui
product: open_webui
affected:
  - 'open_webui >= 0.10.0, < 0.11.1'
patched:
  - open_webui 0.11.1
published: '2026-09-09'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T15:14:19.507'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87998'
references:
  - url: >-
      https://github.com/open-webui/open-webui/commit/dc03e7e595d61be97b25a1dd7bb99ad264f73199
    label: security-advisories@github.com
  - url: 'https://github.com/open-webui/open-webui/pull/28113'
    label: security-advisories@github.com
  - url: 'https://github.com/open-webui/open-webui/releases/tag/v0.11.1'
    label: security-advisories@github.com
  - url: >-
      https://github.com/open-webui/open-webui/security/advisories/GHSA-2724-6cpj-gf3v
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
epss: 0.00486
epssPercentile: 0.39252
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T17:28:53.671513Z'
ingestedAt: '2026-09-11T14:42:19.865Z'
---

## Overview

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, DELETE /api/v1/knowledge/{id}/delete in backend/open_webui/routers/knowledge.py authorized deletion against the knowledge base but then removed its administrator-owned external connection without a separate administrator check or a check for other dependent knowledge bases. A non-administrator with write access to one external knowledge base could delete shared instance configuration and make every other knowledge base using that connection unavailable. This issue is fixed in version 0.11.1.

## Affected

- `open_webui >= 0.10.0, < 0.11.1`

## Remediation

Upgrade past the affected range:

- `open_webui 0.11.1`