Directory traversal vulnerability in the Plain Old Webserver (POW) add-on before 0.0.9 for Mozilla Firefox allows remote attackers to read arbitrary files via a .. (dot dot) in the URI.
https://exchange.xforce.ibmcloud.com/vulnerabilities/32467
https://addons.mozilla.org/firefox/3002/
http://www.vupen.com/english/advisories/2007/0558
http://www.securityfocus.com/bid/22502
http://secunia.com/advisories/24127