CVE-2026-50188 Kirby: Request header injection in `Http\Remote`

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins using the Kirby Http Remote class, including Remote::request, Remote::get, and Remote::post, to send outgoing HTTP requests with untrusted data in the headers option could allow newline characters...