---
id: CVE-2026-88001
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 0.9.5 until 0.11.1, server-side web fetches did not reapply
  WEB_FETCH_FILTER_LIST or private-address controls to HTTP redirect
  destinations when A…
severity: medium
cvss: 5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N'
cwe:
  - CWE-918
vendor: openwebui
product: open_webui
affected:
  - 'open_webui >= 0.9.5, < 0.11.1'
patched:
  - open_webui 0.11.1
published: '2026-09-09'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T19:56:01.227'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88001'
references:
  - url: >-
      https://github.com/open-webui/open-webui/commit/e3e4bd87df6fc629e7e22081d980d55a7632b8b7
    label: security-advisories@github.com
  - url: 'https://github.com/open-webui/open-webui/pull/27823'
    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-5x7x-4c3c-qf5w
    label: security-advisories@github.com
  - url: >-
      https://github.com/open-webui/open-webui/security/advisories/GHSA-5x7x-4c3c-qf5w
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00378
epssPercentile: 0.29079
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T13:40:15.988498Z'
ingestedAt: '2026-09-14T08:45:26.952Z'
---

## Overview

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, server-side web fetches did not reapply WEB_FETCH_FILTER_LIST or private-address controls to HTTP redirect destinations when AIOHTTP_CLIENT_ALLOW_REDIRECTS was enabled. An authenticated user could redirect the aiohttp and requests fetch paths to excluded hosts, loopback, private networks, or cloud metadata services and route resulting content into web search, URL ingestion, page-fetch tools, or chat image processing. This issue is fixed in version 0.11.1.

## Affected

- `open_webui >= 0.9.5, < 0.11.1`

## Remediation

Upgrade past the affected range:

- `open_webui 0.11.1`