---
id: CVE-2026-70491
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. In 0.10.2 and earlier, the GET /api/v1/tools/, GET
  /api/v1/tools/list, and GET /api/v1/tools/id/{id} endpoints in
  backend/open_webui/routers/tools.py r…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-200
vendor: openwebui
product: open_webui
affected:
  - open_webui < 0.11.0
patched:
  - open_webui 0.11.0
published: '2026-08-04'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T14:47:15.447'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70491'
references:
  - url: >-
      https://github.com/open-webui/open-webui/commit/c05de13b4fca1ac8a17153782b46b3d0aacf491c
    label: security-advisories@github.com
  - url: 'https://github.com/open-webui/open-webui/pull/27005'
    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-3r7g-q6cg-q2vx
    label: security-advisories@github.com
  - url: >-
      https://github.com/open-webui/open-webui/security/advisories/GHSA-3r7g-q6cg-q2vx
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-3r7g-q6cg-q2vx'
tags:
  - nvd
  - ghsa
  - pip
epss: 0.00478
epssPercentile: 0.38566
aliases:
  - GHSA-3r7g-q6cg-q2vx
ecosystem: pip
ingestedAt: '2026-08-04T21:42:19.669Z'
---

## Overview

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. In 0.10.2 and earlier, the GET /api/v1/tools/, GET /api/v1/tools/list, and GET /api/v1/tools/id/{id} endpoints in backend/open_webui/routers/tools.py returned full Python tool source to authenticated non-admin read-only users. ToolResponse deliberately omitted source and specs, but ToolUserResponse permitted extra fields and handlers spread a full tool model dump into the response, re-admitting omitted fields. A non-admin with a read grant can obtain another user's server-side tool source, which commonly embeds hard-coded API keys, credentials, and internal service URLs. This issue is fixed in 0.11.0.

## Affected

- `open_webui < 0.11.0`

## Remediation

Upgrade past the affected range:

- `open_webui 0.11.0`

## Package advisory (CVE-2026-70491)

Affected packages:

- `open-webui <= 0.10.2`

Patched in:

- `open-webui 0.11.0`

Source: https://github.com/advisories/GHSA-3r7g-q6cg-q2vx