Ruby, Rails & AI Daily: Active Storage RCE Under Active Exploitation, ZJIT Inlines GC

Kicking off a daily roundup on RubyInsights covering Ruby, Rails, and AI. Today’s edition leads with CVE-2026-66066 (“KindaRails2Shell”), the Active Storage RCE that’s now confirmed under active exploitation months after patches shipped for Rails 7.2.3.2, 8.0.5.1, and 8.1.3.1, worth a fleet check even if you patched back in July. Also covered: ZJIT learning to inline GC allocations, this week’s Rails codebase updates, Claude Fable 5.1 topping the Agents on Rails benchmark, Chrome 153’s 230 se...