1 files changed, 2 insertions, 2 deletions

diff --git a/actionpack/lib/action_view/vendor/html-scanner/html/sanitizer.rb b/actionpack/lib/action_view/vendor/html-scanner/html/sanitizer.rb
index 6b8cb3acc7..30b6b8b141 100644
--- a/actionpack/lib/action_view/vendor/html-scanner/html/sanitizer.rb
+++ b/actionpack/lib/action_view/vendor/html-scanner/html/sanitizer.rb
@@ -77,7 +77,7 @@ module HTML
 
     # A regular expression of the valid characters used to separate protocols like
     # the ':' in 'http://foo.com'
-    self.protocol_separator     = /:|(&#0*58)|(&#x70)|(%|%)3A/
+    self.protocol_separator     = /:|(&#0*58)|(&#x70)|(&#x0*3a)|(%|%)3A/i
 
     # Specifies a Set of HTML attributes that can have URIs.
     self.uri_attributes         = Set.new(%w(href src cite action longdesc xlink:href lowsrc))
@@ -182,7 +182,7 @@ module HTML
 
     def contains_bad_protocols?(attr_name, value)
       uri_attributes.include?(attr_name) &&
-      (value =~ /(^[^\/:]*):|(&#0*58)|(&#x70)|(%|%)3A/ && !allowed_protocols.include?(value.split(protocol_separator).first.downcase.strip))
+      (value =~ /(^[^\/:]*):|(&#0*58)|(&#x70)|(&#x0*3a)|(%|%)3A/i && !allowed_protocols.include?(value.split(protocol_separator).first.downcase.strip))
     end
   end
 end