CVE-2026-34523: SillyTavern: Path Traversal allows file existence oracle

A path traversal vulnerability in the static file route handler allows any unauthenticated user to determine whether files exist anywhere on the server’s filesystem. By sending percent-encoded ../ sequences (%2E%2E%2F) in requests to static file routes, an attacker can check for the existence of files (404 if it doesn’t exist, 403 means it exists).