Directory traversal vulnerability in upgrade.php in Piwigo before 2.3.4 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the language parameter.
Lexiglot through 2014-11-20 allows remote attackers to obtain sensitive information (full path) via an include/smarty/plugins/modifier.date_format.php request if PHP has a non-recommended configuration that produces warning messages.