All vulnerabilities
CVE-2026-104120

modelcontextprotocol mcp-server-fetch/mcp-server-everything Fetch Tool server.py fetch_url server-side request forgery

modelcontextprotocol mcp-server-fetch
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 6 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.29%Chance of exploitation activity in the next 30 days, higher than 20% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published2 Oct 2026Updated 6 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

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.

Text from CVE List

Affected versions 10

  • mcp-server-fetchaffected: 2026.6.0CVE List
  • mcp-server-fetchaffected: 2026.6.1CVE List
  • mcp-server-fetchaffected: 2026.6.2CVE List
  • mcp-server-fetchaffected: 2026.6.3CVE List
  • mcp-server-fetchaffected: 2026.6.4CVE List
  • mcp-server-everythingaffected: 2026.6.0CVE List
  • mcp-server-everythingaffected: 2026.6.1CVE List
  • mcp-server-everythingaffected: 2026.6.2CVE List
  • mcp-server-everythingaffected: 2026.6.3CVE List
  • mcp-server-everythingaffected: 2026.6.4CVE List

References 6