---
id: CVE-2026-104120
title: >-
  A security vulnerability has been detected in modelcontextprotocol
  mcp-server-fetch and mcp-server-everything up to 2026.6.4
summary: >-
  A security vulnerability has been detected in modelcontextprotocol
  mcp-server-fetch and mcp-server-everything up to 2026.6.4. Affected is the
  function fetch_url of the file mcp_server_fetch/server.py of the component
  Fetch Tool. The mani…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-918
vendor: modelcontextprotocol
product: mcp-server-fetch
affected:
  - mcp-server-fetch 2026.6.0
  - mcp-server-fetch 2026.6.1
  - mcp-server-fetch 2026.6.2
  - mcp-server-fetch 2026.6.3
  - mcp-server-fetch 2026.6.4
  - mcp-server-everything 2026.6.0
  - mcp-server-everything 2026.6.1
  - mcp-server-everything 2026.6.2
  - mcp-server-everything 2026.6.3
  - mcp-server-everything 2026.6.4
published: '2026-10-02'
updated: '2026-10-02'
sourceUpdated: '2026-10-02T03:16:38.840'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104120'
references:
  - url: 'https://github.com/modelcontextprotocol/servers/issues/4492'
    label: cna@vuldb.com
  - url: 'https://github.com/modelcontextprotocol/servers/pull/4890'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-104120'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/960099'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/412764'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/412764/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-02T03:07:53.991Z'
---

## Overview

A security vulnerability has been detected in modelcontextprotocol mcp-server-fetch and mcp-server-everything up to 2026.6.4. Affected is the function fetch_url of the file mcp_server_fetch/server.py of the component Fetch Tool. The manipulation of the argument url/path leads to server-side request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.