program/lib/Roundcube/rcube_base_replacer.php
@@ -44,8 +44,8 @@ public function replace($body) { return preg_replace_callback(array( '/(src|background|href)=(["\']?)([^"\'\s]+)(\2|\s|>)/Ui', '/(url\s*\()(["\']?)([^"\'\)\s]+)(\2)\)/Ui', '/(src|background|href)=(["\']?)([^"\'\s>]+)(\2|\s|>)/i', '/(url\s*\()(["\']?)([^"\'\)\s]+)(\2)\)/i', ), array($this, 'callback'), $body); }