Critical Rclone Command Execution Bug Threatens Cloud Environments

**Executive Summary:** Security researchers disclosed CVE-2026-49980, a critical unauthenticated remote command-execution vulnerability (CVSS 9.8) in rclone's remote control daemon affecting versions 1.55.0–1.74.2; attackers can exploit crafted GET/HEAD paths and browser-initiated loopback requests to run commands as the service user, so administrators should upgrade to 1.74.3 or higher, enforce HTTP authentication, or disable file serving immediately.