unset $Version, $Path, and $Domain cookie keys, to prevent Disallowed Key Characters from halting app execution on environments which improperly set these as keys
diff --git a/system/libraries/Input.php b/system/libraries/Input.php
index 853b06d..f840c43 100644
--- a/system/libraries/Input.php
+++ b/system/libraries/Input.php
@@ -140,6 +140,14 @@
$_POST = $this->_clean_input_data($_POST);
// Clean $_COOKIE Data
+ // Also get rid of specially treated cookies that might be set by a server
+ // or silly application, that are of no use to a CI application anyway
+ // but that when present will trip our 'Disallowed Key Characters' alarm
+ // http://www.ietf.org/rfc/rfc2109.txt
+ // note that the key names below are single quoted strings, and are not PHP variables
+ unset($_COOKIE['$Version']);
+ unset($_COOKIE['$Path']);
+ unset($_COOKIE['$Domain'])
$_COOKIE = $this->_clean_input_data($_COOKIE);
log_message('debug', "Global POST and COOKIE data sanitized");