Static File Serving

How Route Guard Bypass via Path Traversal happens in Fastify and how to fix it

A high-severity path traversal vulnerability (CVE-2026-15074) in @fastify/static version 9.0.0 allowed attackers to bypass route guards and access restricted files. The agentchatbus-ts service was upgraded from @fastify/static 9.0.0 to 10.1.2, which includes proper path normalization to prevent directory traversal attacks.