CVE-2026-104120 | modelcontextprotocol mcp-server-fetch/mcp-server-everything up to 2026.6.4 Fetch Tool server.py fetch_url url/path server-side request forgery (Issue 4492)

October 1, 2026 Yanac

A vulnerability, which was classified as critical, has been found 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.

This vulnerability is listed as CVE-2026-104120. The attack may be initiated remotely. In addition, an exploit is available.

The pull request to fix this issue awaits acceptance.VulDB Recent EntriesRead More