CVE-2025-63681

4.3 MEDIUM

Published: December 04, 2025 Modified: December 05, 2025

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/TOAST-Research/pocs/blob/main/openwebui/arbitirary_task_stop/report.md

Source: cve@mitre.org

Exploit Third Party Advisory

https://github.com/open-webui/open-webui/blob/46ae3f4f5d7d4d706041bdae4ad2d802e568712b/backend/open_webui/main.py#L1652

Source: cve@mitre.org

Product

https://github.com/TOAST-Research/pocs/blob/main/openwebui/arbitirary_task_stop/report.md

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Exploit Third Party Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score

4.3 / 10.0

EPSS (Exploit Probability)

0.0%

1th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-284

Affected Vendors

openwebui

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