---
id: CVE-2025-63681
aliases:
  - GHSA-frv8-gffc-37px
  - PYSEC-2026-1732
title: open-webui is Vulnerable to Incorrect Access Control
summary: open-webui is Vulnerable to Incorrect Access Control
severity: low
vendor: open-webui
product: open-webui
ecosystem: pip
affected:
  - open-webui <= 0.6.33
published: '2025-12-04'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-frv8-gffc-37px'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-63681'
  - url: >-
      https://github.com/TOAST-Research/pocs/blob/main/openwebui/arbitirary_task_stop/report.md
  - url: 'https://github.com/open-webui/open-webui'
  - url: >-
      https://github.com/open-webui/open-webui/blob/46ae3f4f5d7d4d706041bdae4ad2d802e568712b/backend/open_webui/main.py#L1652
tags:
  - osv
  - pip
epss: 0.00283
epssPercentile: 0.18602
ingestedAt: '2026-07-08T18:25:49.125Z'
---

## Overview

open-webui v0.6.33 is vulnerable to Incorrect Access Control. The API /api/tasks/stop/ directly accesses and cancels tasks without verifying user ownership, enabling attackers (a normal user) to stop arbitrary LLM response tasks.

## Affected packages

- `open-webui <= 0.6.33`

## Remediation

Refer to the advisory for the patched release.