Directory traversal vulnerability in TalkBack 2.3.6 and 2.3.6.4 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the language parameter to comments.php, a different vector than CVE-2008-3371.
https://www.exploit-db.com/exploits/6451
https://exchange.xforce.ibmcloud.com/vulnerabilities/45102
http://www.vupen.com/english/advisories/2008/2565