CVE-2026-58196 ToolHive: SSRF in remote MCP server authentication discovery (host-side, bypasses container isolation)

ToolHive is a utility designed to simplify the deployment and management of Model Context Protocol MCP servers. Prior to 0.31.0, remote.Handler.Authenticate in pkg/auth/remote/handler.go invokes discovery.DetectAuthenticationFromServer in pkg/auth/discovery/discovery.go, whose host-side HTTP...