CVE-2025-63681: Open webui Open-webui Is Vulnerable To Incorrect Vulnerability

LOW
Advisory Identifier: GHSA-frv8-gffc-37px
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CWE-284
Published
Advisory Summary

CVE-2025-63681 is a LOW open-webui is vulnerable to incorrect vulnerability (CWE-284: Improper Access Control) affecting Open webui libraries in the PyPI ecosystem. The issue involves open-webui is vulnerable to incorrect access control. Remediation is available in the latest vendor maintenance releases.

CVE-2025-63681 at a Glance

CVE Identifier CVE-2025-63681
GHSA Identifier GHSA-frv8-gffc-37px
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-284: Improper Access Control
Affected Product Open webui
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2025-63681

To remediate this vulnerability, upgrade all affected Open webui dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

open-webui fixed: Latest secure release 
pip install open-webui>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show open-webui

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-63681, inspect your installed packages using pip:

pip show open-webui

Analyze the terminal output to locate any version of Open webui in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show open-webui command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Open webui, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-63681 Affected Open webui Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
open-webui
pypi/open-webui
PyPI
≤ 0.6.33

References

NVD — CVE-2025-63681 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-63681
Open webui Source Repository REPOSITORY
https://github.com/TOAST-Research/pocs/blob/main/openwebui/arbitirary_task_stop/report.md
Open webui Source Repository REPOSITORY
https://github.com/open-webui/open-webui
Open webui Source Repository REPOSITORY
https://github.com/open-webui/open-webui/blob/46ae3f4f5d7d4d706041bdae4ad2d802e568712b/backend/open_webui/main.py#L1652

Frequently Asked Questions

What is CVE-2025-63681?
CVE-2025-63681 is a security vulnerability in Open webui involving open-webui is Vulnerable to Incorrect Access Control under CWE-284: Improper Access Control.
Which Open webui versions are affected?
Affected versions include releases prior to current release patches across affected packages: open-webui.
What version fixes CVE-2025-63681?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is open-webui affected?
Yes, open-webui is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with CVE-2025-63681?
CVE-2025-63681 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check PyPI dependencies for CVE-2025-63681?
Run the dependency tree command: 'pip show open-webui'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-frv8-gffc-37px",
  "modified" : "2025-12-05T02:21:42Z",
  "published" : "2025-12-04T18:30:53Z",
  "aliases" : [ "CVE-2025-63681" ],
  "summary" : "open-webui is Vulnerable to Incorrect Access Control",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "open-webui"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.6.33"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-63681"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TOAST-Research/pocs/blob/main/openwebui/arbitirary_task_stop/report.md"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/open-webui/open-webui"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-webui/open-webui/blob/46ae3f4f5d7d4d706041bdae4ad2d802e568712b/backend/open_webui/main.py#L1652"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-12-05T02:21:41Z",
    "nvd_published_at" : "2025-12-04T16:16:22Z"
  }
}