[ORGANIZATION]
Japan Computer Emergency Response Team Coordination Center (JPCERT/CC)
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Situations
Ruby on Rails Active Storage vulnerability
2 clusters · 9 sources · last updated
Latest: Ruby on Rails Active Storage Remote Code Execution Vulnerability
In late July 2026, the Ruby on Rails core team issued urgent security updates to address a critical Active Storage flaw (CVE‑2026‑66066) that could allow unauthenticated attackers to read arbitrary files and potentially