CVE-2026-54666: swagger-typescript-api vulnerable to code injection via unescaped OpenAPI path strings in generated method bodies

swagger-typescript-api interpolates OpenAPI path strings (the keys of the paths object, e.g. /users/{id}) directly into a JavaScript template literal inside the body of every generated API method, without escaping. A spec path containing ${ … } survives parseRouteName’s {x} / :x rewriter verbatim and lands as live JS-template-literal interpolation inside the generated path: \…`` line. Any consumer who calls the affected generated method evaluates the attacker’s expression with full importer privileges — file read/write, exfiltration, etc. The attacker controls the OpenAPI spec (remote URL, third-party / public spec, multi-tenant platform); the victim is whoever runs the generator and uses the resulting client.