CVE-2026-53708 ContextForge: DNS TOCTOU race condition causes SSRF protection bypass (`/admin/gateways/test`)

ContextForge is an AI gateway, registry, and proxy that provides centralized discovery, guardrails, and management for MCP, A2A, and REST or gRPC APIs. Prior to 1.0.3, the /admin/gateways/test call site in mcpgateway/admin.py calls validategatewaytesturl in mcpgateway/common/validators.py to...