CVE-2026-45556 Roxy-WI: Authenticated arbitrary file write on every managed load balancer (and downstream RCE) via WAF rule save `config_file_name`

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, POST /waf///rule//save accepts a configfilename form field that is passed straight through to configmod.masterslaveuploadandrestart... as the destination path. The validation chai...