GHSA-5ccf-884p-4jjq: Open webui Denial of Service Vulnerability

HIGH
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CVSS 7.5
CWE-400
Published
Advisory Summary

GHSA-5ccf-884p-4jjq is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Open webui libraries in the npm ecosystem. The issue involves open webui unauthenticated multipart boundary denial of service (dos) vulnerability. Remediation is available in the latest vendor maintenance releases.

GHSA-5ccf-884p-4jjq at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-5ccf-884p-4jjq
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Open webui
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix GHSA-5ccf-884p-4jjq

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 
npm install open-webui@Latest secure release
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: 

npm ls open-webui

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-5ccf-884p-4jjq, inspect your project dependencies using npm:

npm ls 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 npm ls open-webui command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. 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

A Denial of Service (DoS) vulnerability exists in open-webui/open-webui version 0.3.21. This vulnerability affects multiple endpoints, including `/ollama/models/upload`, `/audio/api/v1/transcriptions`, and `/rag/api/v1/doc`. The application processes multipart boundaries without authentication, leading to resource exhaustion. By appending additional characters to the multipart boundary, an attacker can cause the server to parse each byte of the boundary, ultimately leading to service unavailability. This vulnerability can be exploited remotely, resulting in high CPU and memory usage, and rendering the service inaccessible to legitimate users.

GHSA-5ccf-884p-4jjq Affected Open webui Versions

2 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
open-webui
npm/open-webui
npm
≤ 0.3.21
open-webui
pypi/open-webui
PyPI
≤ 0.3.21

References

GitHub Advisory / Wiki ADVISORY
https://github.com/Kludex/python-multipart/security/advisories/GHSA-59g5-xgcq-4qw3
NVD — GHSA-5ccf-884p-4jjq NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-53981
Open webui Source Repository REPOSITORY
https://github.com/open-webui/open-webui
huntr.com/bounties/9178f09e-4... WEB
https://huntr.com/bounties/9178f09e-4d4f-4a5b-bc32-cada7445b03c

Frequently Asked Questions

What is GHSA-5ccf-884p-4jjq?
GHSA-5ccf-884p-4jjq is a security vulnerability in Open webui involving Open WebUI Unauthenticated Multipart Boundary Denial of Service (DoS) Vulnerability under CWE-400: Uncontrolled Resource Consumption.
Which Open webui versions are affected?
Affected versions include releases prior to current release patches across affected packages: open-webui.
What version fixes GHSA-5ccf-884p-4jjq?
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 is the CVSS score of GHSA-5ccf-884p-4jjq?
GHSA-5ccf-884p-4jjq has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with GHSA-5ccf-884p-4jjq?
GHSA-5ccf-884p-4jjq is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check npm dependencies for GHSA-5ccf-884p-4jjq?
Run the dependency tree command: 'npm ls 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-5ccf-884p-4jjq",
  "modified" : "2025-04-15T19:37:49Z",
  "published" : "2025-03-20T12:32:51Z",
  "aliases" : [ ],
  "summary" : "Open WebUI Unauthenticated Multipart Boundary Denial of Service (DoS) Vulnerability",
  "details" : "A Denial of Service (DoS) vulnerability exists in open-webui/open-webui version 0.3.21. This vulnerability affects multiple endpoints, including `/ollama/models/upload`, `/audio/api/v1/transcriptions`, and `/rag/api/v1/doc`. The application processes multipart boundaries without authentication, leading to resource exhaustion. By appending additional characters to the multipart boundary, an attacker can cause the server to parse each byte of the boundary, ultimately leading to service unavailability. This vulnerability can be exploited remotely, resulting in high CPU and memory usage, and rendering the service inaccessible to legitimate users.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "open-webui"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.3.21"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "open-webui"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.3.21"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Kludex/python-multipart/security/advisories/GHSA-59g5-xgcq-4qw3"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-53981"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/open-webui/open-webui"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/9178f09e-4d4f-4a5b-bc32-cada7445b03c"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-21T03:38:57Z",
    "nvd_published_at" : "2025-03-20T10:15:50Z"
  }
}