CVE-2024-7983: Open webui Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-5v9m-57mq-qc75
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CVSS 7.5
CWE-400 CWE-770
Published
Advisory Summary

CVE-2024-7983 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Open webui libraries in the PyPI ecosystem. The issue involves open webui denial of service through endpoint for converting markdown. Remediation is available in the latest vendor maintenance releases.

CVE-2024-7983 at a Glance

CVE Identifier CVE-2024-7983
GHSA Identifier GHSA-5v9m-57mq-qc75
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Open webui
Package Ecosystem PyPI
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 CVE-2024-7983

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-2024-7983, 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-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

In version 0.3.8 of open-webui, an endpoint for converting markdown to HTML is exposed without authentication. A maliciously crafted markdown payload can cause the server to spend excessive time converting it, leading to a denial of service. The server becomes unresponsive to other requests until the conversion is complete.

CVE-2024-7983 Affected Open webui Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
open-webui
pypi/open-webui
PyPI
≤ 0.3.8

References

NVD — CVE-2024-7983 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-7983
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/eff736acd2e0bbbdd0eeca4cc209b216a1f23b6a/backend/apps/webui/routers/utils.py#L49
huntr.com/bounties/f8156ca5-1... WEB
https://huntr.com/bounties/f8156ca5-1328-480f-a72b-8d3dfdad87dc

Frequently Asked Questions

What is CVE-2024-7983?
CVE-2024-7983 is a security vulnerability in Open webui involving Open WebUI denial of service through endpoint for converting markdown 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 CVE-2024-7983?
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 CVE-2024-7983?
CVE-2024-7983 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 CVE-2024-7983?
CVE-2024-7983 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 PyPI dependencies for CVE-2024-7983?
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-5v9m-57mq-qc75",
  "modified" : "2025-03-21T21:23:47Z",
  "published" : "2025-03-20T12:32:47Z",
  "aliases" : [ "CVE-2024-7983" ],
  "summary" : "Open WebUI denial of service through endpoint for converting markdown",
  "details" : "In version 0.3.8 of open-webui, an endpoint for converting markdown to HTML is exposed without authentication. A maliciously crafted markdown payload can cause the server to spend excessive time converting it, leading to a denial of service. The server becomes unresponsive to other requests until the conversion is complete.",
  "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" : "PyPI",
      "name" : "open-webui"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.3.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-7983"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/open-webui/open-webui"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-webui/open-webui/blob/eff736acd2e0bbbdd0eeca4cc209b216a1f23b6a/backend/apps/webui/routers/utils.py#L49"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/f8156ca5-1328-480f-a72b-8d3dfdad87dc"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400", "CWE-770" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-21T21:23:47Z",
    "nvd_published_at" : "2025-03-20T10:15:38Z"
  }
}