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cybersecurityCVSS 9.5 CriticalCVE-2026-660661 source · 2h ago

Critical Rails Flaw Could Let Unauthenticated Attackers Read Server Files via Image Uploads

Ruby on Rails has released fixes for a critical Active Storage vulnerability that could let unauthenticated attackers read arbitrary files from application servers through crafted image uploads.

Affected◉ United States▪ Active Storage▪ libvips▪ ruby-vips◇ André Baptista◇ Bruno Mendes▪ Ethiack▪ GMO Flatt Security◇ Rafael Castilho▪ Rails Security Team▪ Ruby on Rails◇ RyotaK
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Critical Rails Flaw Could Let Unauthenticated Attackers Read Server Files via Image Uploads — Prism