Security review found no exploitable issue — none of the 3 endpoints accept user input, so there's no injection surface (upstream URLs are hardcoded constants, output is XML-escaped). These are defense-in-depth only: deny direct HTTP access to cache/, and cap CURLOPT_MAXREDIRS to avoid a hung request on a misbehaving upstream. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>