Directory traversal vulnerability in index.php in GeBlog 0.1 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the GLOBALS[tplname] parameter, as demonstrated by injecting PHP sequences into an Apache HTTP Server log file, which is then included by index.php.
https://www.exploit-db.com/exploits/3522
https://exchange.xforce.ibmcloud.com/vulnerabilities/33089