CVE-2026-66066 (CVSS 9.5) enables Rails Active Storage RCE via libvips. A Metasploit module is now public. Upgrade Rails and rotate secrets.
CVE-2026-66066
A Rails Active Storage flaw, CVE-2026-66066 (CVSS 9.5), enables arbitrary file read and remote code execution. Patch Rails and rotate secrets now.