CVE-2026-59973 mcp-from-openapi: Bypass of OpenAPI external $ref SSRF fix in latest FrontMCP and mcp-from-openapi

FrontMCP is a TypeScript-first framework for the Model Context Protocol MCP. From mcp-from-openapi 2.3.0 until 2.5.0 and from frontmcp and @frontmcp/adapters 1.2.1 until 1.5.0, libs/adapters/src/openapi/openapi.adapter.ts loadOpenAPISpec forwards untrusted OpenAPI url and spec inputs and...

EUVD-2026-64173

CKAN MCP Server is a tool for querying CKAN open data portals. A known vulnerability CVE-2026-33060 indicated tools including ckanpackagesearch and sparqlquery that accept a baseurl parameter had the risk of making HTTP requests to arbitrary endpoints without restriction. A fix was applied to...

CVE-2026-53509

@aborruso/ckan-mcp-server (an MCP server for querying CKAN open data portals) is vulnerable to SSRF prior to version 0.4.106 . The validateServerUrl hostname check in src/utils/http.ts only blocked the literal string localhost, but hostname aliases such as ip6-localhost and ip6-loopback (defined ...