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Ruby on Rails: Rails::HTML::Sanitizer.allowed_uri? returns true for entity-encoded control-character-split javascript: URLs

🗓️ 12 Mar 2026 22:55:41Reported by smleeType 
hackerone
 hackerone
🔗 hackerone.com👁 10 Views

A vulnerability in Rails HTML sanitizer where allowed_uri? returns true for entity-encoded control-character-split javascript: URLs.

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