Multiple PHP remote file inclusion vulnerabilities in ccTiddly 1.7.4 and 1.7.6 allow remote attackers to execute arbitrary PHP code via a URL in the cct_base parameter to (1) index.php; (2) handle/proxy.php; (3) header.php, (4) include.php, and (5) workspace.php in includes/; and (6) plugins/RSS/files/rss.php.