CVE-2026-28798 Arbitrary internal service access via /v1/sys/proxy when Cloudflare Tunnel is enabled on ZimaOS

ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. Prior to version 1.5.3, a proxy endpoint /v1/sys/proxy exposed by ZimaOS's web interface can be abused via an externally reachable domain using a Cloudflare Tunnel to make requests to internal localhost...