CVE-2026-104120

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.

• https://github.com/modelcontextprotocol/servers/issues/4492
• https://github.com/modelcontextprotocol/servers/pull/4890
• https://vuldb.com/cve/CVE-2026-104120
• https://vuldb.com/submit/960099
• https://vuldb.com/vuln/412764
• https://vuldb.com/vuln/412764/cti