diff --git a/lib/bundler/vendor/uri/lib/uri/rfc2396_parser.rb b/lib/bundler/vendor/uri/lib/uri/rfc2396_parser.rb
index 2f8d55353bfbbb..09c22c9906f8f2 100644
--- a/lib/bundler/vendor/uri/lib/uri/rfc2396_parser.rb
+++ b/lib/bundler/vendor/uri/lib/uri/rfc2396_parser.rb
@@ -497,8 +497,8 @@ def initialize_regexp(pattern)
       ret = {}
 
       # for Bundler::URI::split
-      ret[:ABS_URI] = Regexp.new('\A\s*' + pattern[:X_ABS_URI] + '\s*\z', Regexp::EXTENDED)
-      ret[:REL_URI] = Regexp.new('\A\s*' + pattern[:X_REL_URI] + '\s*\z', Regexp::EXTENDED)
+      ret[:ABS_URI] = Regexp.new('\A\s*+' + pattern[:X_ABS_URI] + '\s*\z', Regexp::EXTENDED)
+      ret[:REL_URI] = Regexp.new('\A\s*+' + pattern[:X_REL_URI] + '\s*\z', Regexp::EXTENDED)
 
       # for Bundler::URI::extract
       ret[:URI_REF]     = Regexp.new(pattern[:URI_REF])
diff --git a/lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb b/lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb
index d527072db468ee..a85511c1460775 100644
--- a/lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb
+++ b/lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb
@@ -100,7 +100,7 @@ def default_regexp # :nodoc:
         QUERY: /\A(?:%\h\h|[!$&-.0-;=@-Z_a-z~\/?])*\z/,
         FRAGMENT: /\A(?:%\h\h|[!$&-.0-;=@-Z_a-z~\/?])*\z/,
         OPAQUE: /\A(?:[^\/].*)?\z/,
-        PORT: /\A[\x09\x0a\x0c\x0d ]*\d*[\x09\x0a\x0c\x0d ]*\z/,
+        PORT: /\A[\x09\x0a\x0c\x0d ]*+\d*[\x09\x0a\x0c\x0d ]*\z/,
       }
     end
 
diff --git a/lib/bundler/vendor/uri/lib/uri/version.rb b/lib/bundler/vendor/uri/lib/uri/version.rb
index 500fdb3f9923ec..84b08eee309b1a 100644
--- a/lib/bundler/vendor/uri/lib/uri/version.rb
+++ b/lib/bundler/vendor/uri/lib/uri/version.rb
@@ -1,6 +1,6 @@
 module Bundler::URI
   # :stopdoc:
-  VERSION_CODE = '001201'.freeze
+  VERSION_CODE = '001202'.freeze
   VERSION = VERSION_CODE.scan(/../).collect{|n| n.to_i}.join('.').freeze
   # :startdoc:
 end
diff --git a/lib/uri/rfc2396_parser.rb b/lib/uri/rfc2396_parser.rb
index 76a8f99fd48ccd..00c66cf0422213 100644
--- a/lib/uri/rfc2396_parser.rb
+++ b/lib/uri/rfc2396_parser.rb
@@ -497,8 +497,8 @@ def initialize_regexp(pattern)
       ret = {}
 
       # for URI::split
-      ret[:ABS_URI] = Regexp.new('\A\s*' + pattern[:X_ABS_URI] + '\s*\z', Regexp::EXTENDED)
-      ret[:REL_URI] = Regexp.new('\A\s*' + pattern[:X_REL_URI] + '\s*\z', Regexp::EXTENDED)
+      ret[:ABS_URI] = Regexp.new('\A\s*+' + pattern[:X_ABS_URI] + '\s*\z', Regexp::EXTENDED)
+      ret[:REL_URI] = Regexp.new('\A\s*+' + pattern[:X_REL_URI] + '\s*\z', Regexp::EXTENDED)
 
       # for URI::extract
       ret[:URI_REF]     = Regexp.new(pattern[:URI_REF])
diff --git a/lib/uri/rfc3986_parser.rb b/lib/uri/rfc3986_parser.rb
index dd24a409ea174e..9b1663dbb6efe3 100644
--- a/lib/uri/rfc3986_parser.rb
+++ b/lib/uri/rfc3986_parser.rb
@@ -100,7 +100,7 @@ def default_regexp # :nodoc:
         QUERY: /\A(?:%\h\h|[!$&-.0-;=@-Z_a-z~\/?])*\z/,
         FRAGMENT: /\A(?:%\h\h|[!$&-.0-;=@-Z_a-z~\/?])*\z/,
         OPAQUE: /\A(?:[^\/].*)?\z/,
-        PORT: /\A[\x09\x0a\x0c\x0d ]*\d*[\x09\x0a\x0c\x0d ]*\z/,
+        PORT: /\A[\x09\x0a\x0c\x0d ]*+\d*[\x09\x0a\x0c\x0d ]*\z/,
       }
     end
 
diff --git a/lib/uri/version.rb b/lib/uri/version.rb
index 7497a7d31a5df7..f0aca586acab4f 100644
--- a/lib/uri/version.rb
+++ b/lib/uri/version.rb
@@ -1,6 +1,6 @@
 module URI
   # :stopdoc:
-  VERSION_CODE = '001201'.freeze
+  VERSION_CODE = '001202'.freeze
   VERSION = VERSION_CODE.scan(/../).collect{|n| n.to_i}.join('.').freeze
   # :startdoc:
 end
diff --git a/test/uri/test_parser.rb b/test/uri/test_parser.rb
index 72fb5901d963f6..cee0acb4b57c87 100644
--- a/test/uri/test_parser.rb
+++ b/test/uri/test_parser.rb
@@ -79,4 +79,26 @@ def test_split
     assert_equal([nil, nil, "example.com", nil, nil, "", nil, nil, nil], URI.split("//example.com"))
     assert_equal([nil, nil, "[0::0]", nil, nil, "", nil, nil, nil], URI.split("//[0::0]"))
   end
+
+  def test_rfc2822_parse_relative_uri
+    pre = ->(length) {
+      " " * length + "\0"
+    }
+    parser = URI::RFC2396_Parser.new
+    assert_linear_performance((1..5).map {|i| 10**i}, pre: pre) do |uri|
+      assert_raise(URI::InvalidURIError) do
+        parser.split(uri)
+      end
+    end
+  end
+
+  def test_rfc3986_port_check
+    pre = ->(length) {"\t" * length + "a"}
+    uri = URI.parse("http://my.example.com")
+    assert_linear_performance((1..5).map {|i| 10**i}, pre: pre) do |port|
+      assert_raise(URI::InvalidComponentError) do
+        uri.port = port
+      end
+    end
+  end
 end