A critical vulnerability has been discovered in Ruby on Rails, allowing unauthenticated attackers to read server files through image uploads. This flaw, noted for its severity, poses significant risks, particularly for applications that utilize Rails image processing features. Organizations are urged to apply relevant patches and enhance their security measures to mitigate potential exploitation.
Ruby on Rails image upload flaw lets attackers read server files
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CVE-2026-66066 flaw lets attackers read files in Ruby on Rails
rapid7.com
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Ruby on Rails fixes critical Active Storage bug CVE-2026-66066
securityaffairs.com
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Ruby on Rails image upload flaw lets attackers read server files
thehackernews.com