PHP remote file inclusion vulnerability in PHPWebLog 0.5.3 and earlier allows remote attackers to execute arbitrary PHP code by modifying the (1) G_PATH parameter to init.inc.php or the (2) PATH parameter to index.php to reference a URL on a remote web server that contains the code.
common.inc.php in phpWebLog 0.4.2 does not properly initialize the $CONF array, which inadvertently sets the password to a single character, allowing remote attackers to easily guess the SiteKey and gain administrative privileges to phpWebLog.