Fix #3123
diff --git a/system/core/Security.php b/system/core/Security.php
index 68e345c..741ff22 100755
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -370,7 +370,7 @@
* We only convert entities that are within tags since
* these are the ones that will pose security problems.
*/
- $str = preg_replace_callback("/[a-z]+=([\'\"]).*?\\1/si", array($this, '_convert_attribute'), $str);
+ $str = preg_replace_callback("/[^a-z0-9>]+[a-z0-9]+=([\'\"]).*?\\1/si", array($this, '_convert_attribute'), $str);
$str = preg_replace_callback('/<\w+.*/si', array($this, '_decode_entity'), $str);
// Remove Invisible Characters Again!