program/lib/Roundcube/rcube_washtml.php
@@ -240,7 +240,8 @@ $value = $node->getAttribute($key); if (isset($this->_html_attribs[$key]) || ($key == 'href' && !preg_match('!^(javascript|vbscript|data:text)!i', $value) ($key == 'href' && ($value = trim($value)) && !preg_match('!^(javascript|vbscript|data:text)!i', $value) && preg_match('!^([a-z][a-z0-9.+-]+:|//|#).+!i', $value)) ) { $t .= ' ' . $key . '="' . htmlspecialchars($value, ENT_QUOTES) . '"';